Amid rumors that Miley Cyrus is dating (or at least hooking up) with "Twilight" actor Kellan Lutz, new photos of the two partying it up in Las Vegas have emerged online, even one of them sharing a quick kiss, JustJared reports.

On Friday night during the grand opening of the new Beacher’s Madhouse at the MGM Grand Hotel & Casino, 21-year-old pop singer Cyrus and 28-year-old actor Lutz were photographed dancing together and exchanging a kiss on the cheek, though Cyrus was seen grinding with Lutz's manager Ryan Daly later on in the night.

The "Wrecking Ball" singer wore a vintage cream-colored Calvin Klein top, a black Issey Miyake skirt with suspenders and a pair of Versace shoes for the event.

Also in attendance at the grand opening were Katy Perry and her friend Markus Molinari, who had joined Cyrus and Lutz at the premiere of "Britney Spears: Piece of Me" earlier that evening, according to JustJared.

On Dec. 17, Cyrus and Lutz were photographed leaving the same private jet in Miami, causing many to speculate that the two are now an item. While Lutz has denied the rumors, telling paparazzi that he's "happily single" and "very focused on work," some insiders claim that Cyrus and Lutz are keeping things casual.

Click here to see photos of Miley Cyrus partying and sharing a kiss on the cheek with Kellan Lutz in Las Vegas.