1 of 17
2 of 17
Drew Barrymore catches up on mommy-and-me time with her baby girl – she celebrates her very first birthday on Sept. 26! – during a sunny stroll in Los Angeles on April 7.
3 of 17
4 of 17
5 of 17
6 of 17
Smiles are all around for Nick and Vanessa Lachey (who pose with son Camden during a April 7 photo shoot in Los Angeles) as they celebrate their cheery baby boy's first birthday on Sept. 12. "I had a lot of expectations for what fatherhood would be because I thought about it for so long but when it happens, it blows your mind every day," the singer told PEOPLE about his role as a dad.
7 of 17
ELLA & BRENDAN WAHLBERG
It's not one, but two celebrations for Mark Wahlberg and his busy brood! Before her 11th birthday on Sept. 2, the actor's eldest daughter is all ears alongside her proud pop at the Radio Disney Awards in L.A. on April 27. Meanwhile, little Brendan – who turns 6 on Sept. 15 – leads the way during a June 8 family outing in Beverly Hills.
8 of 17
Three's a crowd for the birthday girl – she's 7 on Sept. 30 – as she joins proud pop Peter Facinelli and older sis Lola at the Hollywood premiere of the Disney flick Planes on Aug. 5.
9 of 17
10 of 17
OLIVIA VAN DER BEEK
Basking in the summer sun, soon-to-be dad-of-three James Van Der Beek stays in step with his beach babe – who turns 3 on Sept. 25 – while vacationing in Barbados on May 27.
11 of 17
With his 5th birthday (Sept. 5) on the horizon, Minnie Driver's little man gets into the festive spirit – thanks to his fun headgear! – with mom at his side during a July 21 Flipeez event in Los Angeles.
12 of 17
Like mother, like daughter: Salma Hayek's little girl – who rings in her 5th birthday on Sept. 21 – proves she's got quite a grasp on fashion, donning a lavender cardigan and pleated dress topped off with neon-lined flats in Venice, Italy on May 29.
13 of 17
Talk about happy feet! The almost 2-year-old (Sept. 13) shows off his moves, giving mom January Jones a good laugh while out and about in L.A. on April 7.
14 of 17
What's so funny? Melissa Joan Hart's soon-to-be 1-year-old (Sept. 18) catches a case of the giggles and receives the ultimate birthday gift: a newly-decorated nursery (courtesy of Disney Paint), unveiled during a fun-filled pajama party on July 12. "I know [he] liked his new room because he took his very first steps there the day after we finished it!" the proud mom joked to PEOPLE.
15 of 17
16 of 17
And away they go! Before catching their flight, Heidi Klum and her almost 8-year-old (Sept. 12) take a joy ride through LAX on April 3.
17 of 17