Did she forget her wallet, or did she blow through all her dough?!

Kristin Cavallari enjoyed a girl's night out on the town in L.A. last night, and when the reality star was ready to head home, she started asking photographers outside Horray Henry's nightclub for cab fare money!

The Hills alum could have been joking, but one photographer forked over the cash, and the blonde beauty wasn't pleased with the minimal amount he gifted her. "A dollar, thanks," she quipped before hopping in the back seat.

She's got her own lucrative businesses and she's married to an NFL star, so you would think she could pay for her own taxi!