Though it is about a week old, this gossip is the type of juice we just can't pass up. We hear that last Wednesday, Tinsley Mortimer held a chic "intimate post-dinner show" for designer and member of the New York elite Peter Som at the swanky Frederick's Lounge in Midtown. (We're sure you can imagine the scene — and yes, gagging is a completely natural reaction.)

Anways, at this event, where designer Amanda Ross and uber stylist Ann Caruso were trying to dink their Moet in peace, a ridiculously pushy PR agent, who obviously didn't know her place was with the regular people, tried to push into the private party.

An industry insider who attended the event dishes that a publicist named Amanda* from Captivante PR crashed the party. While the private event was strictly for guests of Peter Som — and this little "you can't fucking come in" policy was kindly explained to her — Amanda waited for staff to look away before entering the member's room with her crew of clients. From which she was promptly booted.

Staffers at Frederick's felt kind of terrible for the "tacky publicist" and, reportedly, proceeded to throw two bottles of champagne at her, setting her crew up in a room where "the public" is allowed to chill. Fredericks even picked up the tab. But Miss Amanda apparently doesn't stop being a bitch when loaded with free bubbly.

After being presented with a comped bill for over 500 dollars, she and her guests left a fistful of crumpled singles amounting to 17 dollars. The manager on duty was so dismayed he paid cash out of his own pocket to his waitstaff to make up for the pr person's gaff.

See, we don't care about pissing off the Tins (in fact, we were a little impressed at first). But throwing a crumpled $17 bucks at the waitstaff? That's just disgusting.

*A Google local search points to Amanda Moore, but the contact info for Captivante is less easy to pin down. Have insider info? Send to tips@jossip.com.