Man-ista: Jonathan Cheban, TV personality on E!’s “The Spin Crowd,” Kim Kardashian’s BFF, founder of JETSET for RichRocks jewelry line

It’s hard to catch Jonathan away from his BFF Kim K’s side, but we scored a few moments alone with him at a recent charity event to pick his brain for fashion do’s and don’ts — for dudes.

Recessionista: Of course, you’ve never make any fashion mistakes (duh) but what’s your biggest “don’t” for other dudes?

Jonathan: Don’t wear those 3/4 pants…or whatever they’re called. What are they called anyway?

R: Capris.

J: Capris! Right. Don’t do that. It’s a terrible look, on anybody. It just doesn’t look good.

R: Yikes, noted! What about a major guy fashion “do” right now?

J: Well I have to say it: probably my new line of jewelry, JETSET for Rich Rocks. It’s very cool, with edgy designs for guys and girls. It’s hot. And everyone’s buying it! *wink*

R: As seen on Rihanna and Biebs! Any other go-to’s? What about when you want to keep it simple?

J: I love Ralph Lauren. I always go there first to get my polo shirts. I actually used to model for Ralph Lauren. Their stuff is just gorgeous and, okay…I love the ads!