Yikes! Kristin Cavallari is now officially part of the ‘scary skinny club’.

5’2′ Kristin has always been petite and fit but since finishing filming that last season of The Hills she’s lost at least 15 pounds and now looks emaciated. The 23-year-old shocked onlookers when she walked the red carpet at the When In Rome premiere in Los Angeles on January 27, revealing that her cute, girly figure had been replaced with stick-like limbs.

Experts guess that Kristin is weighing in at a waifish 100 pounds.

kristin cavallari before af