Meet Pesto, the chonky king penguin who has shot to viral superstardom with his big appetite, little waddles and signature fluffy coat. Now, the nine-month-old chick is due for a summer glow-up. P.S.

Pesto the penguin is growing up. How will life change for the internet's favorite bird? Melbourne’s 50-pound celebrity chick is molting, revealing adult feathers beneath his iconic brown fluff.