Check out all the birthdays this week — there are some big ones!

Penn Badgley was surprised on the Gossip Girl set by costar and ex-girlfriend Blake Lively with a cake. He turned 24 on Monday (November 1).

Big Time Rush on-screen couple Katelyn Tarver and Kendall Schmidt share a big time birthday — 21 and 20, respectively — just a year apart.

Kevin Jonas will celebrate his 23rd birthday on the road in South America, where he’s currently touring with his Camp Rock 2 cast mates.

Emma Stone already has a lot to celebrate on top of her 22nd birthday and this year, Jean-Luc Bilodeau will get 20 wishes, instead of just 16.

Who else is celebrating? “Whip My Hair” singer Willow Smith turned 10 on Sunday (October 31) while Alexz Johnson, Julie Berman and Luke and Elliott Tittensor also blow out some candles this week.