AT40 Guest-Hosted by Mariah Carey Dec 4, 2010 10:39:16 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by upland1425 on Dec 4, 2010 10:39:16 GMT -5 This weekend's American Top 40 with Ryan Seacrest is being guest-hosted by Mariah Carey.
