500 Days of Kristin, Day 161: Time to Celebrate 1.81K Allie Jones 07/05/15 12:01PM Filed to: 500 days of kristin 500 days of kristin kristin cavallari half-birthday It’s Kristin Cavallari’s half-birthday. Today, she is 28.5 years old. This has been 500 Days of Kristin.[Photo via Getty]
