The couple was accompanied by, good friend, Mark Salling and sports illustrated model Nadia Agdal.
Rumer attended the event in a black triangle bikini, metallic skirt, and a long black knit cover-up. Jayson played is cool in a red Hurley button up shirt and blue shorts.
Both Rumer and Jayson sported sunglasses at the Vegas dayclub, but Jayson accessorized a bit more with a Gucci watch and a Samsung Galaxy camera which he was proud to show off.
Check out all the photos from the red carpet grand opening event below.
Photos: © Justin Paludipan