Kourtney Kardashian
The reality star and beau Scott Disick play on the beach with son Mason—on their first vacay since the arrival of daughter Penelope!
Giuliana Rancic
Too cute! The E! star keeps stylish son Duke close.
Alessandra Ambrosio
The supermodel stunner enjoys a shopping outing with 4-year-old daughter Anja.
Halle Berry
The 46-year-old pregnant star drops off her daughter and soon-to-be big sis Nahla at school.
Gisele Bündchen
Hot mama! Just two months after giving birth, the supermodel and husband Tom Brady took baby Vivian to Hawaii, where she showed off her crazy tight abs.
Beyoncé
Off her Super Bowl halftime performance, Beyoncé is hotter than ever—in more ways than one! Known for their protectiveness of daughter Blue Ivy from the paps, Bey and husband Jay-Z take their baby for a family lunch in Los Angeles.
Natalie Portman
The Black Swan actress enjoys a day in the sun with her family.
Jennifer Garner
Mrs. Affleck and son Samuel visit the doctor's office in Los Angeles for a checkup. Baby's healthy and apparently so is mom: trim, stylish and smiling!
Miranda Kerr
Mrs. Orlando Bloom looks sexy—if a bit incognito—in a black blazer, blouse, skinny jeans, and panama hat while out and about with her little guy.
Mariah Carey
Mariah, Nick Cannon and their twins, Monroe and Moroccan, hang out on their yacht in Australia.
Jessica Alba
The star takes Honor on a mommy-daughter mani-pedi date.
Jennifer Hudson
These days, the former Idol star is looking slimmer and sexier than ever. She departs from LAX with son David Otunga Jr. in a relaxed but sophisticated all-black ensemble that shows off her curves.
Claire Danes
The Homeland star kisses her infant son, Cyrus, at LAX. Say it with us now: Awww!
Reese Witherspoon
The star takes a New Year's vacay in Hawaii, lounging surfside with hubby Jim Toth and baby Tennessee.
Charlize Theron
The pixie-haired Prometheus star takes her adorable son, Jackson, to a playdate in Hollywood.
Salma Hayek
The star—rocking a sexy print and voluminous hair—returns to L.A. after a holiday vacation with her daughter Valentina.
MORE PHOTOS: Most Adorable Celeb Baby Pics Ever!