Rumor won’t stay in Vegas

AFTER sparking wedding and pregnancy rumors at the Billboard Music Awards on Sunday, Machine Gun Kelly and Megan Fox also had guests guessing at Diddy’s afterparty at Las Vegas hot spot Tao.

The couple arrived to the club in a hot pink stretch limo, and Fox “immediately hit the dance floor,” we’re told.

The actress, however, didn’t consume booze despite Diddy’s DeLeón tequila and Cîroc vodka flowing freely for the VIP crowd. “She didn’t drink alcohol all night,” a source told Page Six.

In an interview last year, Fox said that she gave up booze more than a decade earlier after a specific public incident. She said she got “belligerent and said a bunch of s--t I shouldn’t have said” while walking the 2009 Golden Globes red carpet.

Still, people at Diddy’s party were left speculating that Fox is pregnant. Her drink-free dance came after Kelly, 32, took the stage at the awards show to perform his song “Twin Flame.” He introduced it saying, “I wrote this song for my wife,” adding, “This is for our unborn child” as a sound of a heartbeat played.

Reps for the pair have not confirmed whether or not they’re expecting — or married. They got engaged earlier this year.

The couple also celebrated Fox’s 36th birthday at midnight, when Tao staff presented her with a dessert platter, complete with a large carousel horse shooting sparklers.

Diddy was greeted with a huge presentation of his tequila when he arrived at the club. Celeb pals Cara Delevingne, Janelle Monáe, Jermaine Dupri, son Justin Combs, Mary J. Blige, Nelly, Timbaland and Usher all showed up to celebrate. Diddy — who recently announced his return to music — had Heidi Klum dancing at his table, and he and Lil’ Kim jumped on the mike and hyped up the crowd with DJ Chase B. Rapper French Montana and Brazilian singer Anitta also came to party after dinner, we hear.