Before the GRAMMYs every year, stars step out for a slew of pre-parties and events that include private concerts, cocktail parties and exclusive nominee celebrations. Meanwhile, slew of rising stars like Maggie Rogers, St. Vincent and SZA performed throughout the week at the Mastercard House. And just the day before the Grammys, stars were seen hanging out at GBK's Grammys lounge. From Justina Valentine to Bobby Valentino, celebs were seen mixing and mingling before going home with the ultimate swag bag. Inside the 2018 GRAMMYs pre-parties:More from AOL.com:Will Beyonce be in attendance at the 2018 Grammys?
