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  • ASHLEE SIMPSON photo | Ashlee Simpson

Credit: Starpicz/Splash News Online

Updated: Saturday Sep 15, 2012 | 06:00 AM EDT

ASHLEE SIMPSON

Spending the day by the Wet Republic pool at the MGM Grand Hotel in Vegas, the new aunt embraces the last days of summer in a 6 Shore Road polka-dot jumpsuit, strappy sandals and sweet updo.