Sydney Sweeney, most famously known for her role as Cassie in HBO's Euphoria, was celebrated by clothing brand Revolve. Revolve threw the actress a totally tubular 80s themed birthday bash to celebrate her turning 26. The party was held in Los Angeles on Saturday, and Sydney arrived in a hot pink mini dress with puff sleeves. As you can see by the photos, it was very 80s. Stars like Dylan Mulvaney and Camila Mendes were in attendance. The recent drama surrounding Sydney is her relationship with her co-star Glenn Powell for her upcoming film Anyone But You. Stay tuned for more deets on that.