It's not exactly what I'd expect to wear to a pool party but nevertheless the celeb pack dressed to impress for the Yves Saint Laurent pool party held over night at the Beverley Hills Hotel. Ashton Kutcher and wife Demi Moore looked sharp, if only Demi had checked the sizing on her monochrome satin number beforehand. It practically hung off her tiny frame. On the other hand, Nicole Ritchie's cream gown with embellished detailing added the correct dose of summer holiday style to the occasion.

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