Her social media was littered with snaps of her partying the night away while celebrating her pal's birthday. And Kendall Jenner looked in good spirits as she was seen heading out to dinner in Beverly Hills, California on Sunday. The model, 23, embraced a sports chic look as she was arrived in a vehicle with a mystery male pal. Stylish: Kendall Jenner, 23, embraced a sports chic look as she was seen heading out to dinner in Beverly Hills, California on Sunday Kendall nailed her day off style in a blue and white fleece top and a pair of black shorts which showed off her long, lean legs. She teamed the look with a pair of comfortable trainers, while cladding her features with a pair of chic shades. Later on Kendall was seen making a complete outfit change as she celebrated the birthday of her two close friends. She posted photos to Instagram on Sunday from the star-studded bash with friends and her sister Kylie, 21. Company: The model proved to be in high spirits as she was seen arriving in a vehicle with a mystery male pal Sports chic: Kendall nailed her day off style in a blue and white fleece top and a pair of black shorts which showed off her long, lean legs In one of the black and white snaps Kendall posed a dramatic face as her younger sister flashed the middle finger to the camera. In a solo shot the runway model beamed at the camera and in another she posed with longtime friend Fai Khadr who she called her 'brother.' She also took to her stories to share videos from the event that featured pink streamers and neon lights. As well as a solo video of herself serving face to the camera. Sister, sister: Later on Kendall was seen making a complete outfit change as she celebrated the birthday of her two close friends alongside sister Kylie Jenner, 21 Smile: In one of the black and white snaps Kendall posed a dramatic face as her younger sister flashed the middle finger to the camera Brother in name: In a solo shot the runway model beamed at the camera and in another she posed with longtime friend Fai Khadr who she called her 'brother' The Kylie Cosmetics mogul shared snaps to Instagram Saturday night of the sisters and friends getting ready for the 70's themed bash. She posted a clip of herself cheering on 20-year-old Sofia Richie, who was posing up a storm in a dressing room. Sofia is dating 36-year-old Scott Disick, who has three children with Kylie and Kendall's 39-year-old half-sister Kourtney Kardashian. Flashing her chiselled midriff in a glittering silver bra and navy leggings, Sofia danced around for Kylie's camera. Selfie: Kendall later posted a solo video of herself serving face to the camera while dancing away Neon: The brunette beauty also took to her Stories to share videos from the event that featured pink streamers and neon lights Show leg: The lip kit mogul popped on a blonde bob wig with bangs and held her phone in front of her face for mirror selfie purposes By the time she was featuring in a video with Kendall, Kylie had slipped herself into a sparkling pink mini-dress with full sleeves. The lip kit mogul popped on a blonde bob wig with bangs and held her phone in front of her face for mirror selfie purposes. The ladies were all glammed up to celebrate their former personal tutor Tiffany Sorya's birthday. Meanwhile, Kendall got in touch with her animal instinct by modeling a silver and black leopard print dress with a dangerously high thigh-slit. Looking good: Flashing her chiselled midriff in a glittering silver bra and navy leggings, Sofia danced around for Kylie's camera Cheer on: Kylie posted a clip of herself cheering on 20-year-old Sofia Richie, who was posing up a storm in a dressing room Kendall arced her left leg out through her dress' slit to show it off to full advantage, shooting her best smouldering stare at the mirror. Kylie made sure to capture her and her sisters' shoes, which in her case were covered in silver glitter. The dynamic duo were standing in a large bathroom that was done up all in white except for the glass shower walls. Celebrating: The ladies were all glammed up to celebrate their former personal tutor Tiffany Sorya's birthday Flex: Kendall arced her left leg out through her dress' slit to show it off to full advantage, shooting her best smouldering stare at the mirrorAll rights reserved for this news site dailymail and under his responsibility