The latest viral craze to hit the Internet hard, like what puberty did for Zac Efron, is the Facebook Puberty Challenge. The social media giant recently challenged its users to post their very first profile pics alongside their current ones to see their transformation. Celebs from Adele to Taylor Swift have all taken the challenge, no thanks to their gleeful, bandwagon-hopping fans. Here at 8 DAYS, we too have decided to subject our celebs to the Puberty Challenge (yes, without their consent) by comparing their then-and-now shots, via their very first and their latest 8 DAYS covers. There are a few jaw-dropping transformations (looking hawt, Jamie!) and hefty changes (Chen Liping sheds a few kilos while her BFF Rui En, um, puts on a couple).