Is Justin Bieber dabbling in the world of cougars? According to one report, yes, but it's not just any lady twice his age, the pop star has allegedly gone after Love & Hip Hop: Atlanta star Karlie Redd!

MediaTakeOut claims to have an "extremely reliable source" spilling information to them that Redd has been visiting The Biebs in his Atlanta home for a pit stop quickie.

The gossip site says that the reality star has been spotted going inside the mansion during the wee hours of the night and leaving just a couple hours later, suggesting Karlie got "tooted and booted" [Translation: Justin has sex with her and then kicks her out the house].

But is this nonsense seriously true? Nope! RumorFix reached out to Karlie who denies the claims, telling us, "Although I am a fan of Justin's music, we are NOT dating, nor have we ever hooked up. All allegations of a relationship between he and I are completely untrue."

And there you have it!