To celebrate her 26th birthday, Rihanna rented out a huge winter cabin in Aspen and brought along all of her closest friends and family. RiRi’s Instagram has been blowing up with hot flicks of the on-going party. The star put on a white bikini and made her way outside into the snow to soak in the hot tub and puff a little something. Check the sexy b-day pics of Rih in the gallery!