Kristin Cavallari, who turned 23 years old last week, got around to celebrating her birthday at Eve nightclub in Las Vegas, NV last night with a select few family and friends. KC was presented with her own birthday cake for the occasion … she was also, apparently, presented with her own couch to sit perched upon as she reigned over the evening:

I understand Miss Thang was sippin’ on champagne all night long, which sounds like fun … I just hope she was actually having much more fun that it looks like in these stiff photos. Perhaps Kristin and her peeps really got her party on last week on her actual birthday and last night was just a nice prologue to welcome in her 23rd year of life. Whatever the case may be, let’s send out all our (belated) Birthday Lurve to Kristin Cavallari today!

[Photo credit: Splash News]