Actor and expert Lincoln driver Matthew McConaughey had a bustup with wife Camila Alves in Hollywood on Sunday. The genetically blessed couple were all smiles at the premiere of the actor’s new movie “Interstellar” at Annex Ballroom — until they weren’t. The pair, who married two years ago and have three children, were all lovey-dovey as McConaughey sat on a sofa with Alves on its arm (and his). Then, we’re told, they suddenly excused themselves and began a heated exchange a few feet away.

Alves left her handsome hubby to wind down his conversation with guests, including “Interstellar” co-star Mackenzie Foy, then returned a few minutes later to collect him. The pair dutifully turned their frowns upside down, said their goodbyes, and called it a night. A rep for McConaughey denies any beef, saying her client left simply because the party was over. “They were the last ones to close the party down,” she said.

The actor, 44, and his fashionista bride, 32, started the evening off well. Not only were they striking in matching silver-toned outfits befitting the sci-fi premiere. McConaughey even told reporters before the bash that he might bypass the opportunity to travel in space if it meant being away from his wife and kids. “I’d have to see how long I'd be gone and if I could take them with me,” he said. By the looks of things at the after-party, McConaughey doesn’t always get to decide when and where he goes.

SPLIT DECISION FOR MARTIN, J.LAW

Chris Martin must be getting tired of all this consciously uncoupling. Just seven months after splitting from Gwyneth Paltrow, the 37-year-old Coldplay singer is no longer dating 24-year-old Oscar-winning actress Jennifer Lawrence, according to People magazine, which reports that it was Lawrence who put an end to the four-month relationship. Paltrow, 42, has recently been linked to “Glee” producer Brad Falchuk, 43. Neither Martin or Lawrence has confirmed the uncoupling.

TRACK STAR IGGY

Just call it “Saturday Night Lip Sync.” Iggy Azalea, musical guest on last Saturday’s “SNL,” did just that as her hit “Fancy” played on a prerecorded track, we’re told. One audience member calls it “completely obvious,” saying, “There was a track, everyone knew.” Our source also says that Azalea’s pal, singer Rita Ora, who performed with her, was there with boyfriend Rich Hilfiger (Tommy Hilfiger’s son), and the duo were “all over each other” in front of cast and crew. After the show, everyone partied till the wee hours at Zengo, a Latin-Asian fusion restaurant in Midtown.

BUS STOP FOR BEY & SOLANGE

After spending so much time in London and Paris, Beyoncé chose to get back to her Southern roots on Sunday. Queen Bey and little sister Solange Knowles attended a cocktail reception for the art exhibition “Amen Amen! The 17 Wards of Wonder” in New Orleans. The gorgeous siblings posed in front of a bus called “Bounce Baby Bounce.”

NEW YORK HAS A GRANDE TIME

Minidiva Ariana Grande is a [email protected] reader. On Saturday we reported that the “Problem” singer was a no-show at a Wednesday charity event in Manhattan, where our sources overheard organizers say that fear of Ebola had altered her travel plans. Hours after performing in L.A., Grande tweeted that she’d seen that headline after finally arriving in NYC on Saturday. Keep your eyes peeled for a hazmat suit with little cat ears on top.

MARV SCORES $15M IN HOME GAME

Yessss! Marv Albert has cashed out his Lincoln Square penthouse for $15 million, Daily News real estate editor Katherine Clarke tells [email protected] Albert bought the three-bedroom, 3,553-square-foot pad for $2.39 million in 1996, a year before he allegedly sunk his teeth into a woman in a Virginia hotel room. The famed sportscaster’s former pad includes four baths, a terrace, an exercise room and a system that allows music and shades to be controlled remotely. Albert and his wife now reside in Tribeca.

MISGUIDED POEHLER EXPEDITION

Amy Poehler visited the Howard Stern radio show Monday, and was still wondering if that was a date she was on with John Stamos following her split from ex-husband Will Arnett a few years back. “I remember I was at dinner with John Stamos. ... I was at a restaurant, we were having dinner and I was like, oh maybe this is a date, but I didn’t know,” she said. Poehler, who was promoting her new book, “Yes Please,” is now happy with Nick Kroll, who is most definitely her boyfriend.

TRAVELING FOR TWO

Carrie Underwood keeps her baby bump hidden under a royal blue dress while leaving a taping for “The View” on the Upper West Side.

POSITIVE BANKS STATEMENT

Pro Bowl linebacker Carl Banks is blitzing all five boroughs with clothes for kids in need. The two-time Super Bowl champion and his G-Ill Sports company has teamed up with K.I.D.S./Fashion Delivers for a Wednesday Donation Day, where clothes brought to the Tahl Propp Equities Community Center at 107-123 E. 129th St. in Harlem will find their way to people who need them as the weather gets colder. It’s good to see the former Giant still supports the home team.

TOM GETS THE SNAP — WITH GISELE

Continuing their quest to make the entire world jealous of them one accomplishment at a time, Tom Brady and Gisele Bundchen posed like winners for an Instagram shot after Brady and the New England Patriots scored 51 points to defeat the Chicago Bears on Sunday. “So happy for my love!!! Go Pats!!! 51 points!!!” Bundchen captioned the photo.

KRUGER, JACKSON FLAUNT IT

Proving they might just be the most stylish couple in Hollywood, Diane Kruger and Joshua Jackson mastered the art of dressing at a party for Flaunt Magazine on Saturday night. At the event, held at the L’Arc nightclub in Paris, Kruger wore one of her friend Jason Wu’s designs from Boss, and Jackson looked dapper in a navy suit.

STARRY NIGHT

Pregnant Molly Sims sports a floral minidress and dramatic side-swept hair at the “Interstellar” premiere in Los Angeles.

THAT'S WHAT THEY SAID:

‘Look, I don’t know how to do this.’ Every time I approach a song, there’s no rules.’

Paul McCartney, talking to students at Florida’s Rollins College about songwriting

‘My favorite Chinese dish is cashew chicken.’

— Twitter phenom Larry King.