Look who’s 4!
In a series of photos, the trio rocked superhero outfits at their son’s backyard birthday bash.
Guests – who included Blac Chyna and Lamar Odom – enjoyed an outdoor dance party at a private residence in Los Angeles, Calif. on Sunday (February 19).
The model, 33, and the rapper, 29, share joint custody of their son.
Continue looking through our gallery to see more birthday party pics.
Happy birthday to Sebastian!