'Love & Hip Hop: Hollywood' Star Sincere Show -- The Only Thing Fake About the Show Is Joseline's Boobs!

"Love & Hip Hop: Hollywood" star Sincere Show is towing the party line -- despite what Joseline Hernandez says -- everything on the show is real, except for maybe one or two things.

Sincere was out Thursday night at Supperclub LA when we asked him about the "Love & Hip Hop: Atlanta" star's deposition, in which she swore the show was scripted.

Sincere was quick to defend the franchise, saying everything that goes on is 100% real. Then he took a shot at Joseline for being the one who might be fake ... and he wasn't talking about her personality.

He might have a point ...