Hailey Bieber is setting the record straight about reports that she and Justin Bieber are expecting a baby. After the model, 25, rocked a flowing cream Saint Laurent shift dress to attend the 64th Grammy Awards on Sunday, April 3, where her husband, 28, was nominated for eight awards — but walked away with none — rumors began to swirl that she was canceling a baby bump. However, on Monday, April 4, the Drop The Mic host left a comment under Radar’s social media post about fan speculation that she was with child writing: “I’m not pregnant leave me alone.” JUSTIN BIEBER SUED BY PHOTOGRAPHER AFTE…