Serena Williams turned up the heat in a yellow swimsuit. Williams, 43, showed off her bikini body via Instagram on Thursday, August 21, in a neon one-piece while posing in the ocean. The tennis pro st

Tennis great Serena Williams has taken to social media to show off her dramatic recent weight loss wearing an ab-baring, two-piece gown, sports bras and tight baby T-shirts. But she is absolutely sizzling in a new share, showing her in the ocean in a tropical, bright yellow bathing suit with little cut-out.

Caleb Luna, assistant professor of feminist studies at the University of California, says having someone like Serena Williams speaking out is "a breakthrough". They say it helps silence the critics of how "weight loss is achieved" who say that "people are taking the easy way out" by using weight loss drugs.