Lauren Conrad  dress book signing the hills orange dress No wonder she's writing a book on beauty... she's so naturally gorgeous!

Lauren Conrad signed copies of her latest book Beauty at Books and Books in Miami yesterday, and the best-selling author looked stunning in an orange dress that complimented her perfectly highlighted locks.

Her book just hit stores October 16, and the former reality star recently explained to People why she was inspired to reveal her beauty secrets to fans.

"So many times fans ask how to do something, or what tool or product to use, and there are so many tricks I've learned from amazing glam teams. I felt this was a great way to share it all with the girls who will really put the tips to good use," she said.

Considering how much her looks have changed - in a good way! - since her Laguna Beach days, we believe LC when she says she knows the best tricks of the trade!