Efron, 26, was first spotted with the beautiful blonde at a Dodgers vs. Giants game at Dodgers Stadium in L.A. on Monday, Sept. 22. They sparked even more buzz when they were photographed in Copenhagen, Denmark, on Saturday, Oct. 11. The two went casual in coordinating black sweatshirts and matching aviator sunglasses. (According to her Instagram page, it appears Miro does some modeling.)
Efron later posted a picture of himself with Miro via his WhoSay account on Tuesday, Oct. 14. "Thx to @ReneRedzepiNoma and team @Nomacph," he captioned the black and white snapshot. "You've created a sophisticated, one of a kind culinary experience I'll never forget. You rock!"
An insider tells Us that the relationship is in the beginning stages. "Zac is dating Sami but it isn't serious," the source says.
The High School Musical alum's last high-profile romance was with Michelle Rodriguez, 36. As exclusively reported, the pair split in August after two months of dating.
"Michelle is going to do her own thing. Zac knew this about her when he got with her," a source told Us at the time. "He's very into her though, and perhaps more than she's into him."