Gwen Stefani: Happy 33rd Birthday Alicia Keys!

Gwen Stefani rocks a denim jacket while heading to her routine acupuncture appointment on Friday (January 24) in Los Angeles.

“happy bday @aliciakeys #angelvoice your energy is magic love gx,” the 44-year-old pregnant entertainer tweeted the day after about Alicia Keys, who turned 33-years-old.

PHOTOS: Check out the latest pics of Gwen Stefani

Earlier in the week, Gwen donned a long black shirt while heading in for an acupuncture session.

FYI: Gwen and Alicia performed a cover of Prince‘s classic “Kiss” together in 2009.

20+ pictures inside of Gwen Stefani heading to an acupuncture appointment…