Drew Barrymore left fans stunned with her latest social media post as she shared a rare throwback video that left her starstruck.MORE: Drew Barrymore steals the show in jaw-dropping ball gown at 2021 CFDA AwardsThe actress posted a childhood clip of herself as she met her "idol" Belinda Carlisle of the Go-Go's at an event.Drew looked absolutely in awe as she spoke to the musician, wearing a colorful outfit featuring a white tee and a bright pink tie.WATCH: Drew Barrymore and Ross Mathews time