Alleged Mistress Finds New Dude to Ride

12/11/2009 2:15 AM PST
Rachel Uchitel was in need of a real pick-me-up yesterday in NYC ... literally.

Tiger's alleged #1 gal's boots apparently weren't made for walkin', and yesterday she decided to hop on her friend's back instead of hoofing it back to her apartment.

She tried to cover up another spandex butt shot ... but as you can see, the effort proved to be in vain.