Adam Lambert: Birthday Wishes for Madonna!

Adam Lambert keeps it cool in sunglasses while doing some shopping on Friday (August 16) in West Hollywood, Calif.

“Happy birthday @madonna ! All hail the O.G. QUEEN of POP. All stems back to you!!” the 31-year-old entertainer tweeted on the same day.

PHOTOS: Check out the latest pics of Adam Lambert

Madonna just turned 55 years old. Happy Birthday Madonna!

Over the weekend, Adam donned a cool leather jacket while stepping out of Chateau Marmont in Hollywood.

Adam has just returned to the recording studio to work on his upcoming highly anticipated album. We can’t wait for the release!