The '90s brought us new boy bands, Friends, and celebrity-filled "Got Milk?" ads that we used to collage our notebooks and bulletin boards. It's been more than 20 years since the MilkPEP-run ad campaign first launched, and in 2014, MilkPEP created a new "Milk Life" campaign. Feeling nostalgic for those early "Got Milk?" moments, we're looking back on some of the most memorable mustache-filled ads from the '90s and early 2000s. Then-teen heartthrob Jonathan Taylor Thomas smoldered in his ad, while Britney Spears struck a silly pose alongside her childhood self. Meanwhile, Kate Moss and David Beckham both stripped down to model their milk mustaches, and the Backstreet Boys bundled up in leather to drink the beverage in an alley. Take a trip down memory lane with these vintage "Got Milk?" ads, then check out signs you were a teen in the 2000s.