Rivers definitely has the hand thing going and seems to have that "gay face" (see below for definition) really down, but this can easily be confused with the metro-sexual generation, so Rivers is probably a new crossbreed of some sort, part gay part metro-sexual.
Gay Face: Gay men are more emotionally expressive, leading to a general “tightness” and muscular activation through out the entire face. Gay face includes an eye expression that is both surprised looking and predatory. Eyebrows are usually arched higher than that of straight men, and eyebrow hair is manicured.
Great example of Gay face is Ted Haggard:
You can see the traces of Gay Face in Rivers as well: