The former World No. 1 tennis star is now the face of GLP-1, crediting the drug with her 31-pound transformation.

Earlier this week, Serena Williams revealed in an interview that she'd recently used GLP-1 weight-loss medication and lost 31 pounds in the process. Related: "Probably Didn't See That One Coming": People Are Sharing Celebrities Who Are Total Angels In Real Life, And Some Of Them Are Surprising Millions Of People

Jameela Jamil has called out Serena Williams for promoting weight-loss medication.The 43-year-old tennis champion revealed last week that she shed 31lbs (14kg) using the GLP-1 treatment — which includes the likes of Ozempic and Mounjaro and plays a key role in regulating blood sugar,