Posted on Mon Jun 2, 2008 11:28 AM PDT
Demi and Ashton joined newlyweds Katherine Heigl and Josh Kelley and newly-newlyweds Charlie Sheen and Brooke Mueller (who first met at the Butterfly Ball two years ago...awww!) to raise money for a good cause.
Which celeb couple looked hotter on the red carpet - Demi and Ashton or Paris and Benji?
Course, Demi showed off a bit more than her flawless face and happy marriage - click through to see what else she was flashing!
Is that a scar from a knee lift or just knee surgery?
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SEE THE GALLERY Stars Fly at Chrysalis' Butterfly Ball!