My partner has the same issue.  Attention is nice and all, but getting attention for a beer-belly couch potato doesn't count.  It's insulting to think she'd be interested in the first place.  What's your method of culling the herd?  She usually smiles and asks if they're at the party with someone.  If they say "Yes, my wife," then she'll have them point her out in the crowd.  99% of the time the ladys a sow, so she's say "Awwww... she looks... nice..." and then walk away.