Back in December, Mandy Harvey posted a selfie while sporting a reindeer hat with jingle bells and wrote, "Hahaha it makes me laugh knowing I'm making a bunch of noise!" The woman has a sense of humor. The ukulele-playing singer-songwriter, who turned 30 in January, was a finalist lauded for her perfect pitch and original songs on Season 12 of "America's Got Talent" last year, placing fourth.