I just saw her Covergirl commercial today, and while she looks fine on the commercial, the sound of her voice on the voiceover is like nails raking down a chalkboard.
I've never been that crazy about her singing, but her speaking voice is definitely not one that can sell products. She could use a good voice coach (for diction and tone). Her narration nearly ruined the commercial for me. Hopefully she'll get better in time.