A day before the 2015 Grammy ceremony Jay-Z hosted an annual pre-Grammy Roc Nation brunch held at a private residence in Beverly Hills on Saturday rocking a pair Distressed “WHITE” Jeans (£265)  by Off-White and King Push x EQT Running Guidance 93 (£150) by Adidas Originals. Hip-hop moguls, pop divas, and Fortune 500 executives rubbed shoulders at the lavish soirée, which has become one of the hottest tickets of Grammy weekend. Among guests there was Rihanna who wore a Altuzarra floral-print skirt and bra from the 2015 Spring/Summer collection and a white cardigan. Kanye West and Kim Kardashian made a fashionable entrance of their own. Kim donned a red crop top and floor-length skirt by Balmain from the 2015 Fall/Winter  collection while debuting her new short hair. But all eyes were on Mr. West and his new adidas Yeezy Boost 750 sneakers, which he wore for the first time in public. Beyoncé was stunning in a black Alexandre Vauthier jumpsuit from the 2015 Spring Haute Couture collection as she celebrated with her husband before dashing off to Grammy rehearsals. The Formula 1 champion, Lewis Hamilton, who was also present at the party was wearing a red Quilted Moto Sweatshirt (£750) by Balmain and a pair of red and black classic SL/H10 High Top Sneakers (£440) by Saint Laurent. Rapper Meek Mill was wearing an Abstract Skull Print Sweatshirt (£500) by Givenchy whereas Miguel was rocking a Leopard Print Coat (£1200) by Moschino.