Olivia Munn, Winnie Harlow, Jessica Simpson, Kevin Hart and more
Star snaps of the week: Olivia Munn, Winnie Harlow, Jessica Simpson, Kevin Hart and more Birdie Mae Johnson (left) and mother Jessica Simpson have a good time her seventh birthday with a donut! jessicasimpson/Instagram Serena Williams begins her spring break by hitting the ski slopes. serenawilliams/Instagram Olivia Munn (left) and her 1-year-old daughter, Mei, load…