Nelly Furtado: Loose ----> (6 yrs) The Spirit Indestructible
Christina Aguilera: Back to Basics ----> (4 yrs) Bionic
Avril Lavigne: The Best Damn Thing ----> (4 yrs) Goodbye Lullaby
Basically, if you wait longer than 2.5-3 yrs to release an album in the immediate gratification pop world and you aren't a certified ICON/LEGEND, you're kind of screwed for future success.
