Avril Lavigne Reunites With Ex-Husband Deryck Whibley On-Stage: Video – Hollywood Life

The When We Were Young festival isn’t for another four months, but Las Vegas became a pop-punk haven during Avril Lavigne’s concert at the MGM Grand Garden Arena on Saturday, June 1. The “Girlfriend” singer, 39, brought out her ex-husband Deryck Whibley, 44, for a surprise performance of Sum 41’s hit “In Too Deep” as part of the concert.

Avril brought out the Sum 41 singer-guitarist near the end of her main set. She teased that she had a surprise in store for the audience before he came out. “Okay, Vegas. I’ve got a little surprise for you guys, tonight. Tonight, we have a special guest, and he plays guitar in one of my favorite bands and your favorite bands. Ladies and gentlemen, please give it up for Deryck from Sum 41!” she announced.