Justin timberlake

From Gwen Stefani to Miley Cyrus and John Mayer, these pop stars have written breakup songs about other famous people.

These actors' first big on-screen roles were none other than themselves.

"Gentle reminder that justin timberlake won't see your tweets but your friends who use kohl's cash will."

JT is apparently afraid of this 'Janet' documentary.

"On and off the stage she was a constant source of joy and positivity."

"No woman should ever be restricted from making decisions about her own body."

Justin allegedly wanted to outdo Britney Spears.

The pop star admitted he "failed" both women.

Check out cringe-worthy fashion fails from our favorite celebrity couples.

We didn't even know some of these famous folks were expecting!