Ashlee Simpson celebrated the 20th anniversary of her album Autobiography with a performance in WeHo ✨

debut album is 20 years old — and she’s celebrating by giving fans a special surprise.

The singer, 39, dropped an Expanded Edition of Autobiography in honor of the record’s milestone anniversary on Friday, July 19. The new version features the album’s 12 original tracks — including “Autobiography,” “Pieces of Me” and “La La” — as well as three songs not featured on the U.S. edition of the record.

“The extended version is just songs that I didn’t release in the States,” Simpson said of the album’s new tracks — “Harder Every Day,” “Sorry” and “Endless Summer” — in an interviewSimpson went on to tease that she is “hoping to” continue the anniversary fun by going back on tour. “Right now, I’m doing a fun club performance on July 20 [in Los Angeles]. I want to celebrate and have a good time with the fans,” she revealed. “That is not a show. It’s more just for fun, and maybe I’ll sing ‘Pieces Of Me’ and ‘La La,’ but I wanted to celebrate and sing with everyone. I’m looking to do some actual shows coming in November, December, coming in the new year.”

Simpson is following up the extended album’s release by taking the stage at West Hollywood’s Heart Nightclub on Saturday, July 20. “LA!! I can’t wait to celebrate 20 years of Autobiography with you,