Check out a super slender Ashlee Simpson outside LA's Katsuya restaurant in a flowing black maxi dress. Do you think she's too thin?
Earlier in the evening, a tired-looking Ashlee attended the debut of jewelry designer Neil Lane's new bridal collection for Kay Jewelers at W Hotel in Hollywood.
Ashlee was one of several celebrities who raised more than $1.3 million to boost clean-up efforts along the Gulf Coast in the wake of the oil disaster.
Her husband, Former Fall Out Boy rocker Pete Wentz, appeared on a star-studded TV telethon last month to take donations in a bid to boost funds for those affected by the massive oil slick.
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