Popular Female Singers in the past 2 decades


Hi, can you name 10 most popular/favorite female singers (vocalist, artist) in the past 2 decades?

I want to collect the CDs for these singers and very often I heard those songs (mostly pop, movie theme sound track, etc) on radio FM103.5 or 107.9. But I don't remember or recognize their names or the songs.

Celine Dion and Britney Spears are just 2 examples. Thanks.
r0817
all of the above plus,
Alison Krauss
Lisa Hannigan
Sarah McLaughlin
Paula Cole
Alanis Morissette
Of all so far mentioned, I only own one album of. Sam Goody was unloading all of their LP stock for $1.00 ea. when CDs were becoming popular. Whitney looked good in the white bathing suit, on the back cover. Say no more.
Annie Lennox
Shawn Colvin
Linda Ronstadt
Jennifer Warnes
Sara K
Susan Tedeschi
Amy Winehouse
Adele
Melody Gardot
Renee Olstead
Jacintha
Duffy
Caro Emerald
Cassandra Wilson
Kate Bush
Sarah Jarosz
Ingrid Michaelson
Diane Birch
All worth taking a good listen to.
Jennifer Warnes
Patricia Griffin
Carrie Underwood
Holly Cole
Madeline Peyroux
Patricia Barber
K D Lang
Bonnie Raitt
Jane Monheit
Thanks for the list so far. I'll research the albums of these singers.

Meanwhile, do you have any great albums (CDs), songs that you can recommend for these singers?