By many measures, Trisha Yearwood was the biggest female country star of the early '90s, recording a string of Top Ten hits that ran from 1991 to 2001. She landed a number one hit right out of the gate with "She's in Love with the Boy," a breezy, sweet single that established her sweet spot: tuneful, mellow country-pop that could've crossed over into the adult contemporary charts. During the '90s, Yearwood racked up five additional number one singles -- "XXX's and OOO's (An American Girl)," "Thinkin' About You," "Believe Me Baby (I Lied)," and "Perfect Love" -- with the last a...