Ever wondered what you'd look like with Angelina's updo? Or J.Lo's lowlights? Now you can preview your preferred cuts and colors with In Style's new Hollywood Hair Makeover. The tool lets you upload your own picture (or use a model with a similar face shape to yours), and from there you can browse the encyclopedia of celebrity hairstyles. You can also customize the hair color, highlights, and lowlights to see what you'd look like as a redhead, blonde, brunette or anything in between. I've spent a nearly-embarrassing amount of time playing around here, and it's a lot of fun to see which celebrity hairstyles are the most flattering. (Turns out I look great with Ashanti's layered cut. Who knew?) Have fun!