Metro

‘Gross’ Gaga’s a skankee

She’s persona non Gaga.

A fuming Hal Steinbrenner informed Yankee Stadium executives that Lady Gaga is permanently banned from the team’s clubhouse after her boozy antics — including swigging whiskey and repeatedly fondling her boobs — during a visit to the house that Ruth built Friday night, sources told The Post.

The songstress and two girlfriends sauntered their way into the Bombers’ clubhouse — without team approval — and hung out for 30 minutes after the team lost to the Mets.

She met six players — including Alex Rodriguez and Robinson Cano — while the “Poker Face” singer kept slurring her words trying to say how much she loved the Yankees and how thrilled she was to be inside the exclusive area, sources said.

Gaga, drinking Jameson Irish Whiskey, was wearing a Yankees jersey half-unbuttoned, exposing her black bra, fishnet stockings and a bikini bottom.

But apparently she didn’t think that was enough to catch the players’ eyes, so she kept groping her chest over her jersey.

The show inside the clubhouse was news to Yankees brass.

Hal, who is co-chairman with brother Hank, club president Randy Levine, general manager Brian Cashman and manager Joe Girardi all had no idea she was going to show up, sources said.

In fact, when a Post reporter told Cashman about Gaga’s presence, Cashman said, “What? I didn’t know that,” and stormed off.

Sources said Gaga, who left through a private exit, smooth- talked her way past stadium security.

The bizarre incident was the 24-year-old raunchy songstress’ second recent run-in at a baseball game.

Gaga, who has called herself a lifelong Yankee fan, caused a spectacle at Citi Field on June 10.

She showed up in the fifth-inning and threw a tantrum when she was seated in the front-row.

After cursing out nearby photographers, she forced the team to move her to Jerry Seinfeld’s luxury box.

Then she flipped off the Flushing crowd with both fingers after swilling beers.

tim.perone@nypost.com