Meghan Trainor and Kelly Clarkson have teamed up!

Can you believe it's been 10 years since 'All About That Bass' came out?

Meghan Trainor was on The Kelly Clarkson Show to celebrate this great milestone.

"Celebrating 10 years of #AllAboutThatBass with my idol on the @kellyclarksonshow 😭🥹 I’ll cherish this forever. Thank you @kellyclarkson 💕"

Meghan and Kelly decided the best way to celebrate this, would be to perform the song together.

Check out their behind-the-scenes video from the dress rehearsal here:

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