Mariah Carey wore two different tiny swimsuits while filming in Southern Italy with fellow recording artist Miguel yesterday. The pop icon showed off her fit physique when she shared a photo collage of herself in a black cutout monokini on Twitter with the caption, "Behind the scenes on set with @MiguelUnlimited!! Coming soon." As part of the shoot, Mariah and Miguel went swimming in the blue grotto, off the island of Capri, and hopped on a yacht after climbing out of the water. The duo have been spending time together since collaborating on the song "Beautiful," which was released last month and is a track off Mariah's highly anticipated 13th studio album. The album, the official title of which has yet to be released, will drop July 23.

Much of the hype may be due to Mariah's frequent Facebook, Twitter, and Instagram teases. While she announced the album release date on her personal accounts, Mariah also took to Instagram yesterday to share a personal snap of herself in blue waters with the caption: "A much needed splash after hours pon de mic singing for my beautiful lambily." In the post, she was addressing her fan base and revealed that her new work encompasses "three years of my soul." Mariah has returned to song-making after announcing last month that she will be not be returning for the next season of Fox's American Idol.

Reese Witherspoon had the company of her brother, John, for a trip to the pool with her son Deacon in Nashville yesterday. Deacon beat the Southern heat with a dip while he accompanied his mom in her native Tennessee for family time. Reese, Deacon, and her oldest child, Ava, caught a flight out of LAX on Saturday together, but they were without her husband, Jim Toth, or Reese's ex Ryan Phillippe ahead of Father's Day.

Ryan may not have been able to spend the holiday with his children since he was in Hawaii promoting his new project, Isolated, at the Maui Film Festival last week. He did have his kids on his mind, though, since Ryan spoke of steering them in a direction other than show business during an interview there. He said, "I don't mean to dismiss or demean our industry but I'd like to see them do something a little more meaningful or important [than enter show business]."

Harry Styles fit in serious shirtless time while in Miami recently. He stripped down to a pair of white shorts to hop on board a yacht with his One Direction bandmates in Florida on Saturday and also showed off his abs last week during a night out with his pal Niall Horan. Harry and Niall went shirtless after the sun went down, and the duo stopped to take pictures and greet fans as they departed their boat. The One Direction crew fit in fun in the sun between taking the stage in Ft. Lauderdale and Miami last week, though they've since moved onto Nashville where they are schedule to perform tomorrow.

While Harry's been showing skin in Miami, he chose a much more formal look for a special occasion earlier this month. Harry buttoned up in a tuxedo to serve as the best man at his mom Anne Cox's wedding in Cheshire, England, two weeks ago, joining the long list of celebrities taking part in wedding season.

With Kate Middleton's anticipated due date approaching, we're diving into all the details of what to look forward to in the royal baby's first year. Taking the monarch's traditions and Prince William's upbringing into account, we've compiled a short guide filled with the fun milestones, special dates, and adorable photo ops we may be seeing in the coming months. As we await the birth of the royal baby, get excited with a glimpse into the future heir's first year!

Beyoncé showed her support for Jay-Z when she attended the 10th anniversary party for his 40/40 Club in NYC last night. She wore a white Roberto Cavalli gown as she sipped on Champagne and mingled with guests like T.I., his wife, Tiny, and Kylie Minogue, who put her legs on display in an Anthony Vaccarello minidress. Beyoncé showed her support for another friend, Kanye West, yesterday when she publicly congratulated him and Kim Kardashian on the birth of their first child. She was by Kanye's side last week when she and Jay-Z attended a listening party for Yeezus in NYC last Monday. Kanye had been touring around the country to host listening parties for his new record but had to pull out of his bash last Friday in LA when Kim reportedly told him that she wasn't feeling well and was checking into the hospital.

JoAnna Garcia and her husband, Nick Swisher, shared the first picture of their daughter, Emerson Jay, today. The baby girl, who they are calling Emme, was born in May and the family of three celebrated their first Father's Day together over the weekend. JoAnna took to Twitter to reveal the first image and share that she and Nick wanted everyone "to meet our little angel." She added, "Thank you to our beautiful friend and beyond talented photographer Jacqueline Jo for the amazing shots of our little princess!!"

The LA Film Festival kicked off last Thursday, and stars have already flocked to the event to promote their newest projects. Yesterday, Octavia Spencer stepped out for the Fruitvale Station premiere, while Shailene Woodley attended her The Spectacular Now debut. On Saturday, Rooney Mara met up with Casey Affleck to show support for their flick, Ain't Them Bodies Saints, while Alessandra Ambrosio took her daughter, Anja, to the premiere of My Little Pony: Equestria Girls. Click through to see all the stars at the LA Film Festival — so far!