FOX 26 - A new report shows more Americans are investing in their backsides. According to the American society of plastic surgeons, butt implants and lifts are the fastest growing sector in the plastic surgery industry. In the last 15 years, people undergoing butt enhancement surgeries rose by more than 250%. More men are going under the knife as well. Men accounted for 40% of all breast reductions performed. A 35% increase since 2000.