Gwen Stefani: Bid on a Signed No Doubt Bass Guitar for Charity!

Gwen Stefani chats on the phone as she heads inside a nail salon on Friday (July 12) in Beverly Hills, Calif.

The 43-year-old No Doubt rocker got a mani-pedi that afternoon!

“Bid on a bass signed by @NoDoubt + help support people living with Down Syndrome” the No Doubt Twitter updated earlier in the week. There are several days left to bid on the signed guitar to help the worthy cause – check it out and donate if you can!

The estimated value of the bass is $5,000!

FYI: Gwen is wearing Paige Denim pants.

10+ pictures inside of Gwen Stefani heading inside a nail salon…