Justin Bieber was spotted getting ready to hit the slopes in Aspen on Friday. The 28-year-old pop star looked warm and cozy in a tan pullover ski jacket with a hood, gray pants and white boots. The Yummy singer kept his hands warm in a thick pair of waterproof gloves as he stood near his SUV.Also with him was his wife Hailey Bieber's best friend Kendall Jenner. Justin and Hailey as well as Kendall have been seen earlier this week partying in Aspen with Kylie Jenner and her pal Stassie Baby. Hitting the slopes: Justin Bieber, 28, hit the slopes with a group of friends, including Kendall Jenner, in Aspen FridayThe only pop of color was the Grammy winner's green ski helmet with large goggles held tight with a turquoise strap. The singer, who has dozens of tattoos on his body, placed at least one black star sticker on his face, something he's made a practice of doing while on vacation in the winter wonderland. Jenner, 27, was seen stepping out of the same SUV. The reality star was nearly unrecognizable in a black Ralph Lauren ski outfit, with a black safety helmet and goggles.