From ultrasounds to 16th birthday celebrations, it was a busy week for celebrity moms and dads! Moms-to-be Busy Philipps, Margherita Missoni , Jessica Simpson , and Ivanka Trump  all shared pictures of their bumps and babies-to-be, while Alyssa Milano  and Kelly Ripa  spread some birthday love through their social media accounts. In between, Rachel Zoe  snapped a pic of little Skyler after a swim lesson, and Molly Sims had stripes on her brain after dressing just like her son, Brooks. Click through now to see this week's cutest celeb tot candids, and don't forget to follow POPSUGAR Moms on Instagram , Facebook , Pinterest , and Twitter !
Kelly Ripa  and Mark Consuelos celebrated their eldest son Michael's 16th birthday.
Jessica Simpson  snapped a picture of her "loves" while they napped.
Mariah Carey  spent quality time with her mother, Patricia, and her daughter, Monroe.
Julian Seinfeld sported some red-dyed lips at the Baby Buggy Bedtime Bash.
Jessica Simpson  shared a photo of a "metaphor" in which she likened her growing baby bump to a hot air balloon.
Rachel Zoe  enjoyed a special moment with Skyler.
Evan Asher won the jackpot (and eventually a giant Smurf) in Las Vegas.
Molly Sims and Brooks were matchy-matchy in stripes.
Arthur Bleick spent the afternoon with his feet in the sand.
Skyler Berman had a post-swim-class playdate with a friend.
Busy Philipps is wishing she had Tom Cruise 's ultrasound machine after seeing her baby-to-be's latest sonogram.
Alyssa Milano  celebrated Milo Langdon's 21-month birthday.
Ivanka Trump  marveled at her baby's 21-week sonogram.
Margherita  Missoni  showed off a silhouette of her growing baby bump — she's seven months along!