Welcome to the first post of our newest beauty feature, BellaSugar's Insider Look Into Celebrity Makeup Bags. We've got the scoop on what beauty products celebs really love! It's one thing to read about what colors a makeup artist donned on our favorite leading ladies for a magazine cover or awards show, but it's another to find out what they personally can't live without!

Here's a look at what some of the products the beautiful and bubbly Rachel Bilson adores: