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Meghan Trainor Radio

In case you haven't noticed, the guys of 5 Seconds of Summer have MILLIONS of fans -- and that includes celebrities like Meghan Trainor. Meghan showed her 5SOS pride when she recently paid a visit to BBC Radio 1's Live Lounge and covered the band's song "Don't Stop" with her ukulele!

She explained during the show that she met the 5SOS guys while performing on iHeartRadio's 2014 Jingle Ball Tour. Before performing "Don't Stop," she said of the tune, "I love this song. It's one of my favorites from them. The boys are very sweet - I met them on the Jingle Ball tour, one of them, and I thought this song sounded perfect on ukulele. I put a little twist on it."

Watch Meghan Trainor's ukulele cover of 5 Seconds of Summer's "Don't Stop" below!

Check out 5SOS' original for reference: