Photo: WENN
Cyndi Lauper performed with Adam Lambert at the Home for the Holidays concert at Beacon Theatre last night (8 December).
The Broadway event raised money for homeless gay, bisexual and transgender youth in New York.
Adam recently spoke about being a posterboy for the LGBTQ community, but insisted that gay men would not approve of his dress sense.
Speaking to Fiasco magazine, he said, "For the general audience, they look at the way I style myself and they go, 'Errrr, that's gay,' but you ask a handful of gay guys and they're like, 'I would never wear that!'"
Skip to 1:08 to see Adam's performance with Cyndi Lauper:
He also spoke to the magazine about his recent performances with Queen, as their frontman.
Adam admitted, "Those shows I did with Queen were pretty surreal. I was really excited and super-flattered, but intimidated at the same time.
"How do you live up to someone like Freddie Mercury? There was no way I could ever compete with him.
"I had to let that go and create an experience of paying tribute."
Photos: Queen and Adam Lambert, live in London