Sade smiles in her signature red lipstick as she hit The Late Show with David Letterman last evening. Photo: Getty Images

Sade may have a new album that came out yesterday, but her signature red lipstick hasn't changed.

The singer's been a loyal fan of two M.A.C reds for years.

We love their endless selection of lip colors and finishes, but were surprised when she told StyleList -- as she was making the talk show rounds in New York to promote her new album Soldier of Love, in her first public appearance since touring for her 2000 album "Lovers Rock" -- that she prefers the shades Media Satin and Cyber Satin layered together.

These are decidedly purplish reds, which look more like true reds when worn against her flawless complexion.

Who knew? Not the classic red we predicted! Don't you just love a good celeb beauty surprise?