Credit: Twitter

Big news today for one of entertainment’s hottest mamas. Kimora Lee Simmons’ youngest child is 5 years old. That’s a whole hand, you guys!

The business mogul mom shared her birthday wishes for son Kenzo on (where else?) Twitter, and she gave us fans a gift, too. Check out that adorable photo of the day’s VIP grinning widely as he’s practically covered by presents.

Credit: Kimora Lee Simmons on Twitter

“Guess who's FIVE??! #HappyBirthday 2 my young man! Mamas so proud of you+loves you so much! #KenzoLee,” Kimora tweeted alongside the photo.

We actually can’t believe Kenzo is already 5, and not only because he looks so grown up in the photo his mom shared (no baby phat on him!). Kenzo’s barely out of preschool and he’s already jetsetted around Asia and attended the Cannes Film Festival with his dad, actor and model Djimon Hounsou. And that’s all in just the past couple of months!

Kenzo’s the baby of Kimora’s trio of kids. She has two older daughters with ex-husband Russell Simmons: Ming, 14, and Aoki, 12 this August. All three are growing up beautiful, judging from their mom’s photos!

Happiest of birthdays, Kenzo! Here’s hoping 5 treats you well.

Share your birthday wishes for Kenzo in the comments below!

Source: Kimora Lee Simmons on Twitter

Elisabeth Kramer is an Assistant Editor at Wetpaint Entertainment and our resident Downton Abbey expert. Follow her on Twitter and Google+!