Lady Gaga just had an AIDS test. So should you.

Lady Gaga and her idol  Cyndi Lauper have joined forces -- through Viva Glam lipsticks -- to raise money for the MAC AIDS Fund initiative.

MAC has just introduced lipsticks named after both women. Lauper's is a light coral red. Gaga's is a bubble-gummy pink. Both retail for $14 and are in stores today. All proceeds go to the fund.