Vanessa a leading B’way lady

She’s gone from Miss America to America’s first lady.

Vanessa Williams stars as the presidential wife in Broadway’s “POTUS” — a role she has been gathering material for over her entire life.

“I’ve met five first ladies in my lifetime, which has been pretty extraordinary, so I’ve got some great history to pull from,” the actress/singer, 59, told The Post on Friday. “Because they’re all amazing, graceful, smart, passionate, dedicated women.”

Her first real-life FLOTUS encounter came after she was crowned Miss America in 1983, when she attended a White House state dinner and met President Ronald Reagan and his wife, Nancy.

The satirical play, whose full title is “POTUS: Or, Behind Every Great Dumbass are Seven Women Trying to Keep Him Alive,” opened at the Shubert Theatre last month and has been nominated for three Tonys.

The president remains unseen in the show, but audiences learn a salacious detail — that he got a young woman, played by Julianne Hough, pregnant. Williams, who invited her Chappaqua neighbor Hillary Clinton to see the show, shrugged off any parallels to real life.

“There’s been lots of scandals, John F. Kennedy, I mean, there’s been scandal across the board,” she said.

One recent scandal to rock Broadway was the leak of a video and photos of a nude Jessie Williams (no relation) starring in “Take Me Out.”

The mother of four and first-time grandmother called it “part of the risk of doing a show where you’re full frontal and full rear.” It’s a risk she knows firsthand, having resigned her Miss America title after nude photos of her emerged.

For her “badass” “POTUS” character, Margaret (above), Williams says her accessories were inspired by those of real-life first ladies.

“The triple strand of pearls is definitely very Barbara Bush,” she said. “The head band that I wear in Act 2, Hillary went through her head band phase. The jumpsuit, I think Michelle Obama is probably the only first lady that’s ever done a jumpsuit.”