"I have been using Olay products for over a decade now," Carrie Underwood said at press conference announcing her new partnership with the skin care line this morning. "Olay is something women trust and people trust me because I just can't lie!" The 5-time Grammy Award-winning singer will be the first North American ambassador for Olay, joining the ranks of the gorgeous Thandie Newton (U.K.) and Maggie Cheung (China). "I have always loved makeup, but taking care of my skin didn't become a focus till I got older," she said. "I remember my mom always using the original Olay Beauty Fluid and encouraging my sisters and I to take care of our skin. My early twenties became a definite focus on my face, but without doing anything drastic—I am only 27!" And Underwood's already picking favorites: "I have used Olay Total Effects the longest, it doesn't look funky underneath makeup. The Daily Facials cleansing cloths are great because they don't burn your eyes and easily take off all the gunk I manage to put on my face at concerts." Olay will also sponsor Underwood's "Play On Tour" this fall. "With her genuine beauty and girl-next-door likability, Carrie is a natural fit," a rep for the brand said. Her campaign will debut later this year.