It took almost four months, but Kourtney Kardashian has finally introduced her third child, son Reign Aston Disick, to the world. Though the reality star and children's clothing designer has turned to weekly magazines to show off her first two kids — Mason and Penelope — she used her Instagram account to show off her newest addition  writing, "My little turtle dove angel baby boy Reign Aston Disick."
While Reign's debut was a low-key one, for a long time running, it seemed People had a monopoly on introductory celebrity baby photos. Nicole Richie , Christina Aguilera , Jennifer Lopez , and the Jolie-Pitts all turned to the well-established magazine to show off their newest family members. However, today, many celebs are turning to competitors who are doling out generous offerings to new parents. Others are releasing their own photos — either on their own or through photo agencies — to bypass the whole magazine scenario. See how your favorite Tinseltown parents debuted their little ones, and tell us how you think the newest Hollywood babies will be introduced to us!
Source: Instagram user kourtneykardash 
Genesis Ali Dean (Mom's Take)
Alicia Keys  and Swizz Beatz welcomed Genesis Ali Dean into the world in December 2014, and two months later, the proud mama shared this beautiful family photo on Instagram, along with the caption, "Blessings and love!! #GenesisAliDean."
Genesis Ali Dean (Dad's Take)
Shortly after Alicia Keys  shared her first full-family photo including baby Genesis Ali, hubby Swizz Beatz Instagrammed another beautiful picture from the same photo shoot. "Blessings #GenesisAliDean #Deanboyz," he wrote.
Summer Rain Rutler
It was six months before Christina Aguilera  showed off her darling little diva, Summer Rain Rutler. Rather than turn to People magazine for a cover shoot like she did when she had Max Bratman, this time around, Aguilera introduced her daughter via a photo posted on Twitter  with the caption: "Watch out...another one's getting ready to conquer the world! #driven #diva2."
Frances Cole Fallon
Jimmy Fallon  released four cell phone pictures of his new baby girl, Frances Cole, less than a week after she was born. He joked that he was back to work but exhausted!
Source: Twitter user FallonTonight 
Reign Aston Disick
Kourtney Kardashian shared this sweet snap of baby #3, Reign, on Instagram a week after his birth.
Drew Barrymore  followed the traditional path of turning to People to introduce her second daughter, Frankie, to the world. One month after welcoming Frankie, she told the magazine, "I knew that I have two kids to take care of now and just kicked my own butt to get back into the swing of things immediately."
Source: People 
John Krasinski and Emily Blunt welcomed baby Hazel  to the world back in February, and the couple has just released the first photo of their beautiful baby girl via proud dad John's Twitter account. "Pics of kids should only come direct from parents. So I'm thrilled to introduce you guys to Hazel," Krasinski tweeted to his fans .
Source: Twitter user johnkrasinski 
Otis Alexander Sudeikis
An eager Olivia Wilde  announced the birth of her son with fiancé Jason Sudeikis via Twitter and shared this sweet photo of the newborn. In classic comedic form, the new mom tweeted , "Ladies and gentlemen, Otis Alexander Sudeikis has LEFT the building! (I'm the building)."
Source: Twitter user oliviawilde 
Joseph Frederick Kushner
Ivanka Trump  and Jared Kushner welcomed their second child, a baby boy, to the world on Oct. 14, and the enterprising businesswoman and proud mama was quick to share the news with her fans and followers. "Please join in our joy as we welcome Joseph Frederick Kushner, named after each of our paternal grandfathers, both master builders of their generation and inspiring patriarchs of their families," Trump wrote on her Tumblr page. Joseph will join his big sister, 2-year-old Arabella Rose, who's clearly been practicing on her baby dolls!
Children's Hospital star Malin Akerman first took to Instagram to introduce her baby boy, Sebastian Zincone, with the caption "did my hair today and this was my son's reaction... I think he likes it."
Axl Jack Duhamel
Proud new parents Josh Duhamel  and Fergie  took matters into their own hands when it came to the very important matter of introducing their son, Axl Jack, to the public. Earlier today, Josh and Fergie  each posted one of the corresponding photos to their Facebook pages. Josh's snap (on the left) was paired with the caption: "Axl Jack Duhamel. Day. 1 Life is good. #paparazziyoucanleaveourhousenow." Mom Fergie's (right) commentary read: "Axl Jack Duhamel. Day 2 of life. Hearing test complete. All systems go. #chillin."
Mabel Ray Willis
Bruce Willis  and Emma Heming waited until baby Mabel was 6 weeks old before sharing her photo via Emma's Twitter account. The proud mama tweeted , "A beautiful day in Budapest with the loves of my life. Daddy and Mabel cracking each other up!"
Ace Knute Johnson
Jessica Simpson  took to the cover of Us Weekly to introduce baby Ace to the world ! Simpson's second child is nearly 2 months old and appears on the magazine's cover with his 15-month-old sister, Maxwell, and the proud mama. "With two kids, we have our hands full, but every day is a new adventure," Simpson told Us. "I have this huge sense of accomplishment, and I feel in my heart that I'm done. But obviously, accidents do happen!"
Michael Bublé is a dad! The singer and his wife, Luisana Lopilato, welcomed baby Noah to the world on Aug. 27, 2013. The proud papa posted baby Bublé's handsome first photo  to his Instagram account along with the message: "Overjoyed and filled with gratitude at the arrival of our son Noah Bublè. Born this morning, August 27th at 2:26 am in Vancouver, Canada." Congrats to the proud new parents!
Meet North West! Proud dad Kanye West  debuted the first photo of his baby girl, North, who is now 2 months old, during a special stop by Kris Jenner's talk show, Kris, which was filmed earlier this week. Mom Kim Kardashian  and Kanye reportedly call their little bundle of joy "Nori."
Baby Girl Philipps-Silverstein
Busy Philipps shared her new daughter's first picture  on Twitter on July 3, captioned, "So this happened . . . "
Busy is no stranger to sharing her baby news  through social media, where she also shared her pregnancy announcement, ultrasound image, and several baby bump snaps. Busy is already a mom to 4-year-old daughter Birdie with her husband, Marc Silverstein, and this new girl makes a family of four.
Two weeks after Everly  Tatum's birth, Channing Tatum  and Jenna Dewan shared their baby with the world via posts on both of their Facebook pages on Father's Day . Jenna's caption  gushed about their "lil angel," while Channing's bragged  about celebrating his first Father's Day with his "girls."
Milan Piqué Mebarak
Shakira  went the charity route when she was ready to share her first photo of 2-week-old Milan Piqué Mebarak. She teamed up with UNICEF for a virtual baby shower , encouraging fans to donate items such as ready-to-eat therapeutic food ($110) and polio vaccines ($10) in order to gain a glimpse of her little one. About the decision, she and boyfriend Gerard Piqué said, "We hope that, in his name, other less privileged children in the world can have their basic needs covered through gifts and donations."
Drew Barrymore  introduced baby Olive to the world on the cover of People magazine . Nine weeks after welcoming her daughter, Drew said, "It's like the biggest crush I've ever had in my life."
Vivian Lake Brady
Proud mama Gisele Bündchen shared this precious photo of her and Tom Brady's baby girl, Vivian Lake , on Facebook, along with the caption, "Love is everything!!! Happy friday, much love to all." Vivian was born on Dec. 5, 2012, and joined big brothers Benjamin, 2, and John, 5.
Finn Davey McDermott
Tori Spelling  waited until her fourth child, Finn, was a month old before agreeing to a multipage spread in Us Weekly . The cover story was also her first interview after her recovery from emergency surgery following the little one's birth.
Molly Sims welcomed baby Brooks to the world and shared the first photos of the adorable tot on her website  with a few details about life with her new son.
Penelope Scotland Disick
Kourtney Kardashian and Scott Disick chose Us Weekly to show off the first photo of Penelope Scotland Disick, after going with Life and Style when the couple's son, Mason, was born. This week's cover story featured a photo of the reality star in bed snuggling with both her tots.
Noah Phoenix Mazur
Seven weeks after welcoming little Noah Phoenix Mazur to the world, Alessandra Ambrosio proudly showed off the tot on her Facebook page . The photos were part of a photo shoot the Victoria's Secret model did with Pampers to raise money for UNICEF.
Maxwell Drew Johnson
A smiling Jessica Simpson  appeared on the cover of People  along with her and Eric Johnson's month-old daughter, Maxwell Drew. The magazine paid a reported $800,000 to get exclusive rights to the celeb tot's first photos.
Luca Cruz Comrie
Two weeks after giving birth to little Luca Cruz Comrie, proud mama Hilary Duff  showed the tot off for the first time, releasing this picture on Twitter  and tweeting, "Baby Luca, 2 weeks old :)" The previous day, Hilary gave fans a sneak peek with a Twitpic of baby Luca's feet .
Christina Aguilera 's baby, Max, was paid $1.5 million for his People cover.
Though Gwen Stefani  and Gavin Rossdale  worked with OK! to share their first photo of Kingston, they released this image of a newborn Zuma on the singer's website.
Hazel and Phinnaeus Moder
Julia Roberts  also turned to People magazine when she was ready to show off her twins.
Jasper Warren Paisley
Kimberly Williams and Brad Paisley showed off their new family of four on the cover of People.
Brooke Shields  debuted her youngest daughter, Grier, on the cover of People.
Vivienne and Knox Jolie-Pitt
Angelina Jolie  and Brad Pitt  returned to People when they were ready to reveal the first photos of their twins, Vivienne and Knox Jolie-Pitt. The photo spread is believed to be priciest of baby photos, going for about $16 million.
Blue Ivy Carter
One month after Blue Ivy Carter's birth, Beyoncé and Jay-Z released five photos of the little one  on the proud papa's site, Life + Times . With photos of both mom and dad holding the newborn, as well as a few glamour shots, the world got their first look at the hip hop princess's tiny hands, full head of hair, and Aiden + Anais swaddle blanket, thus avoiding the crush of paparazzi and introducing their daughter on their own terms.
Christina Applegate  sat down with People to introduce the world to little Sadie LeNoble and discuss life after breast cancer.
Matthew McConaughey  and Camila Alves settled for a cool $3 million for Levi's first photo.
After giving birth to baby Shiloh, Angelina Jolie  and Brad Pitt  shared their photos exclusively with People.
Just like she did with baby Harlow, Nicole Richie  worked with People to show off her son, Sparrow Madden.
Though Gisele Bündchen first introduced the world to baby Benjamin Brady through a Brazilian magazine cover photo, the model turned to her modeling roots for the first US photo of her son, including him in a photo shoot she was doing with Vogue.
Exton Elias Downey
Robert Downey Jr. appeared on The Tonight Show With Jay Leno to promote The Avengers, but ended up spending most of his segment showing off his baby boy Exton Elias . The proud father allowed the host to show off the first photo of the 8-week-old tot and wife Susan, saying, "He's so darn cute, isn't he?"
John Travolta  and Kelly Preston sat down with People to introduce the world to baby Ben.
Sean Preston Federline
Britney Spears  introduced the world to baby Sean Preston through a People magazine cover story.
Marion and Tabitha Broderick
Sarah Jessica Parker  and Matthew Broderick  introduced Marion Loretta Elwell and Tabitha Hodge via a photo that was released to news agencies, rather than booking a session with a magazine.
Jessica Alba  and Cash Warren received a reported $1.5 million to show off baby Honor. We bet their second baby would have brought in more.
Nicole Richie 's little Harlow earned $1 million for her first photo shoot.
A week after David and Victoria Beckham 's daughter was born, the proud parents posted home photos of the little one on their respective Facebook and Twitter accounts, avoiding the magazine route that many fans expected them to follow.
Katherine Heigl  and Josh Kelley showed off their newly adopted daughter Naleigh on the cover of People.
Sullivan Patrick and Darby Galen Dempsey
Patrick Dempsey  showed off his twins on the cover of People.
Sandra Bullock  shocked the world when she appeared on the cover of People with her newly adopted son, Louis.
Eden and Savannah Mahoney
Marcia Cross 's sleeping twins made their debut on the cover of People.
Emme and Max Anthony
Jennifer Lopez 's twins, Emme and Max Anthony, cashed in for a cool $6 million for their first photo op.
Vin Diesel's Baby
Vin Diesel  shared the news of the birth of his third child via a sweet Facebook post . The actor captioned the photo with lyrics from Louis Armstrong's classic "What a Wonderful World," writing, "I hear babies crying, I watch them grow. They'll learn much more, Than I'll ever know. And I think to myself, What a wonderful world..."
Scarlett May Stuber
Molly Sims announced the birth of her daughter, Scarlett May Stuber, via Instagram and her blog, on March 26. She wrote , "We welcome Scarlett May Stuber into our family. Our hearts are bigger with you here."
Reign Aston Disick
Though she turned to US Magazine to introduce Penelope, Kourtney Kardashian and Scott Disick introduced their third child, Reign, via mama's Instagram account  almost four months after the baby's birth.