LADY GAGA PERFORMS @ THE HRC FOR PRESIDENT OBAMA!

Lady Gaga had an unusual opening act over the weekend: President Barack Obama.
The songstress performed at the Human Rights Campaign dinner in Washington D.C. on Saturday Night, but not before the Nobel Peace Prize-winning Prez could get a laugh from the crowd.

"It is a privilege to be here tonight to open for Lady Gaga. I've made it," the President told the crowd, according to E! Online.

And for this performance the 23-year-old Gaga left her usual panty-less and bootylicious costumes at home, opting for a demure black dress topped with a pair of John Lennon inspired sunglasses.

The singer performed a version of Lennon's "Imagine" but changed the lyrics to reflect the tragedy of Matthew Shepard, a gay college student who was murdered in 1998.

"I'm not going to play one of my songs tonight, because tonight is not about me. It's about you," Gaga said, as Shepard's parents Judy and Dennis reportedly looked on.

The Shepards were given the Edward M. Kennedy National Leadership Award.