Lady Gaga

From Beck to Beyoncé, see how the annual fest's lineup has evolved over the last two decades.

It's about as close as you'll ever get to his signature, pre-teen swoop.

From Katy Perry to Ed Sheeran, these ten pop stars were embroiled in music-related lawsuits.

From Britney Spears to Ariana Grande and Justin Bieber, these pop stars pulled the plug on their tours.

Behind every pop act is a loyal legion of fans, but whose army stans the hardest? The battle begins now!

From Britney Spears to Madonna, check out seven high fashion campaigns starring pop stars.

See some of your faves tackle Elton John classics at this star-studded TV special.

These pop artists gave honky-tonk a try.

Nicki Minaj, Lady Gaga and Ariana Grande also make the list.

From Taylor Swift's '...Ready For It' to Salt-N-Pepa's 'Push It,' these tunes are bound to get you amped.