They weren't always so glamourous! Click through the gallery to see if YOU can guess who these super famous kids grew up to be.
“Last time I had a buzzcut,” this pro tweeted. He’s known for his dance moves and his hair.
"#NoFilter #obviously #ilovemy9yearoldself" this mystery TV star wrote when posting this groovy pic.
“Had the alligator shirt game monopolized back in the day,” one of these bros said.
“Being oh so cool at 13 years old,” the reality star on the left posted of her and a famous friend.”
“#tbt, #cutiepie #easterpic,” tweeted this reality star, who’ll soon have her own cutie pie!
“Killing ‘em with my fro… listening to Stevie Wonder and Michael Jackson,” this happy guy said of his younger self.
“Story of my life,” was the caption accompanying this pic from a superstar singer from the UK.
This singer, who's usually posting pics of her baby, Instagrammed a throwback of herself.