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Angie Everhart says she's been learning a lot about who her "real friends" are in the wake of her thyroid cancer diagnosis ... and one of those friends is Gena Lee Nolin. 

"Anytime you have the big C put in front of you, you do a lot of reflecting on your life," Everhart tells TMZ ... "You

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Jason Collins -- the first active pro athlete to come out as gay -- has already hooked up with a new posse, led by none other than Lance Bass! Teamwork is fabulous, ain't it?

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10:00 PM PST -- A source connected with Usher tells TMZ ... this is a frivolous lawsuit and all the allegations made by the former nanny are completely false.

Usher has secretly been stiffing the nanny ... financially ... this according to a new lawsuit obtained by TMZ.

Cecilia Duncan is

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Diddy's gonna be pissed -- TMZ has learned, Danity Kane (the band he created and later destroyed) is reuniting ... without his blessing.

Four original members of the group -- Aubrey O'Day, Shannon Bex, Dawn Richard, and Aundrea Fimbres -- grabbed lunch today in L.A. with a new manager to discuss