There was already a bright buzz before the Diesel Black Gold Spring show even started thanks to a celebrity appearance from Gerard Butler. As Gerard sauntered up to his front-row seat, photographers and guests went crazy just for a glimpse of the actor, who arrived at the event wearing a pair of broken-in Diesel jeans and a t-shirt. The excitement didn't stop there: Creative Director Sophia Kokosalaki showed an equally standout collection for the brand, offering up a heavy helping of high sheen and utilitarian details. Jewel-toned metallics hit the runway in the way of fit and flared jeans and leather jackets while Bermuda short silhouettes added a refreshing twist to the urban collection. We especially loved the track shorts, which were paired with crisp button-down shirts, tailored blazers, and cool cutout booties playing into the menswear vibe. As the collection moved from day to night, Sophia showed a bevy of draped navy dresses, one of which was layered with an amazing neoprene bustier with buckle strap details. For more highlights from Diesel Black Gold's downtown cool collection, read below.