Grenier Leaves Hottie in the Cold

1/21/2008 4:08 PM PST
Blizzard conditions or not, Adrian Grenier plays by the rule: Bros before hos!

TMZ caught the "Entourage" star last night after a party at the Green House in Sundance with a car full of buddies -- having the unfortunate task of turning down a sure thing one begging drunk chick who asked for a ride.