Arnold Schwarzenegger approves of his model son, Patrick, dating wild pop star Miley Cyrus — despite the concerns of his ex-wife, Maria Shriver — and the former Governator even partied with the young pair on New Year’s Eve, along with Ahnuld’s new flame Heather Milligan, according to The New York Post.

The foursome was seen ringing in 2015 on a triple date with newly engaged Sofía Vergara and her hunky “True Blood” star fiancé Joe Manganiello. Making the scene even more surreal, the group met up privately with Britney Spears before catching her Las Vegas show, “Piece of Me,” and partying into the wee hours.

The newspaper previously reported that Patrick’s mom, Shriver, has been concerned about her son’s relationship with bad girl Cyrus — who smoked pot onstage at Art Basel Miami and had to be carried out of a club after a night of partying during the art fair.

But others in the Shriver clan, like uncle Anthony Shriver, have endorsed the romance.
Nevertheless, “Miley spent the whole holiday season with Patrick, Arnold and Heather Milligan,” a source said. “They spent Christmas and then New Year’s together. Arnold approves of his son’s new relationship, and he was the one who suggested they all spend New Year’s Eve together in Las Vegas.”

The group began the night at The Strip House where Cyrus ordered vegetarian. Vergara, wearing a curve-hugging red gown also sported a huge diamond ring but slyly hid her ring finger during any photos.

Later at Spears’ show at Planet Hollywood the couples had a “private meet-and-greet,” then took their seats in the front row.  The party continued for the young couple who played blackjack in the hotel’s casino until 4 a.m.