So she's bought this ad space and she wants to say something to attract customers. Metrosexual sounds kinda swank and and and all, so she figures that'll give the impression that she's high class. But if it ends up limiting her client count, who cares. What if she said, "Come as you are?" Would that attract or repel guys? She probably doesn't mean she'll only see men in three-piece, narrow leg, tieless suits with a scarf around their neck and a latte in a styrofoam cup.
She's doing a variation on every provider's fantasy, "Simply love CEO types," hoping to snag the biggest fish, but more importantly to let all the little fish know that she mostly spends her time with big fish, so they're real lucky if she'll even see them. So you better get in line fast! And of course, there's going to a few guys who think, Well, if I go do her, then I'm kind of a CEO type. Imagine me, a CEO!
But she said metrosexual, so any suburban clown living in his parents' basement will think, Yeah, I wanna be like the guys who live in the lofts downtown. He'll try to look the part, but does she really care? She sort of has to say something about what she's like and who she's looking for, so this is something different that might sell.
It's just like the processing company that advertises their chili as what cowboys eat out on the trail while branding steers. It doesn't mean that you have to dress up like a rodeo star every time you have chili for lunch, but it kind of means that when you eat their chili you might imagine yourself to be a rough 'n' ready cowhand sitting down at the campfire with a tin bowl.
Or, the alternative, if you show up without the latte, she'll boot you out the door and tell you to come back when you've lost 20 pounds and landed a job as a stock broker or something.
Nevertheless, try to clean up first and make sure you're wearing fresh socks and underwear.