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Mariah Carey
Just like Britney Spears, Mariah Carey was a sight to behold with her pencil figure and flat tummy turning heads during events. However, her personal and professional life has been through some tough ups and downs, and so it was only logical that her weight would ultimately get a hit. The tall blonde has added and lost weight a couple of times throughout her career with the most recent weight loss surgery helping her lose 25 pounds. In a 2018 interview, Britney admitted that she considered weight loss surgery after her extra weight made it hard to pull off her dance routines.