John Stamos’ baby son makes TV debut on late-night show


John Stamos‘ baby son made his TV debut on a late-night show on Wednesday (31Oct18).

The Fuller House actor made an appearance on Jimmy Kimmel Live! to promote his new show You, but the conversation quickly turned to how the program’s musical guest, Beach Boys co-founder Mike Love, had officiated John’s wedding to Caitlin McHugh in February, and the couple’s baby son Billy.

Caitlyn, who was dressed like Pam Dawber’s Mindy from ’70s sitcom Mork & Mindy for Halloween, then brought out the seven-month-old, costumed as the late Robin Williams‘ character Mork, onto the set – causing the audience to applaud.

“Isn’t he just the most beautiful baby? I’m so in love,” John gushed, as little Billy flashed a big smile at him.

While host Jimmy, who was dressed as Mr. Kotter from vintage TV show Welcome Back, Kotter, agreed and commented, “This is the cutest baby I’ve ever seen. You gotta make more of these!”