Stefon Diggs is celebrating his acquittal with a quick kiss … pecking Cardi B on the cheek during a charity event.

The NFL star hosted his Diggs Deep Foundation Mother’s Day wellness event Saturday … and his baby mama Cardi made a cameo, posing for photos and hanging all over the wide receiver. Remember … we told you the pair had broken up earlier this year.

Check it out … the two stood in front of a pink background, and Stefon dipped Cardi — kissing her on the cheek in one of the many snaps photogs took.

According to reporters in attendance … Stefon and Cardi greeted every mother at the event and chatted with them for a moment — giving all attendees a really meaningful interaction with the two stars.

Of course, fans are in awe of this reunion … and are clamoring to know if they’ve reunited. We don’t know if they’re officially back together … but, they’re clearly on better terms.

Diggs might not be a mother, but he got a great gift for the holiday anyway … a jury found him not guilty of attacking his chef last year after brief deliberations earlier this week.

Diggs was clearly emotional right after the acquittal … before he rushed to the gym for a workout.