"Happy Birthday, My Love. We've been together at your last 20 birthday parties. Let's go for 50 or 60 more," Smith captioned the photo, which finds him and Pinkett Smith in front of an older image of themselves striking a pose in Disco-themed outfits.
The couple, married since 1997, has two children together Jayden, 16, and Willow, 14. Pinkett Smith turned 43 years old on Thursday.