Celebrations kicked off on Thursday as Christine Aguilera and Flo Rida performed to kick off Virgin Hotels' Unstoppable Weekend event.
And the fun continued on Friday as AnnaLynne McCord, 33, turned heads for the first official day in a weekend of festivities in Nevada, on Friday.
She looked radiant as she turned up to the opening of the Élia Beach Club at Virgin Hotels Las Vegas to enjoy a pool party.
Stunning: AnnaLynne McCord, 33, dazzled in a floral co-ord for the opening of the Élia Beach Club at Virgin Hotels Las Vegas
AnnaLynne wore a stunning two-piece white dress featuring an intricate flower pattern, which flashed her toned midriff.
She teamed her dress with a pair of brown leather sandals and accessorised with a simple gold pendant necklace.
Meanwhile, Virgin owner Richard Branson appeared in high spirits at the launch of the beach club.
The 70-year-old business magnate wore a simple black T-shirt, addictions foundation of manitoba winnipeg mb with white shorts and a pair of red trainers.
Excited: After giving a speech Richard shook and then opened a bottle of Dom Perignon, directing the stream of bubbles towards his guests
Classy: AnnaLynne wore a stunning two-piece white dress featuring an intricate flower pattern, which flashed her toned midriff