Tiny Says Mariah Carey Made Me Take That Pic With Mayweather

T.I.'s wife, Tiny, wasn't disrespecting her hubby by posing for a photo with Floyd Mayweather ... she was doing it out of respect for Mariah Carey.

We talked to Tiny about the awkward photo op with Floyd taken over the weekend at Mimi's Halloween party, and she explained how she was almost railroaded into standing next to a guy who does NOT get along with T.I.

Tip and Floyd have had beef since their 2014 brawl outside a Fatburger on the Vegas strip.