#100 - Pussycat Dolls

(Photo by Mark Thompson/Getty Images)

#99 - Demi Lovato

(Photo credit TIMOTHY A. CLARY/AFP/Getty Images)

#98 - Ashanti

(Photo by Stephen Dunn/Getty Images)

#97 - Grace Potter

(Photo by Rick Diamond/Getty Images)

#96 - Mandy Moore

(Photo by Jason Merritt/Getty Images)

#95 - Wilson Phillips

(Photo by Carlo Allegri/Getty Images)

#94 - Colbie Caillat

Photo by Rusty Jarrett/Getty Images

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#93 - Feist (Leslie Feist)

(Photo credit OLIVIER MORIN/AFP/Getty Images)

#92 - Jordin Sparks

(Photo by Christian Petersen/Getty Images)

#91 - Monica

(Photo by Scott Cunningham/NBAE via Getty Images)

#90 - Regina Spektor

(Photo by Chris Hyde/Getty Images)

#89 - Hillary Scott (Lady Antebellum)

(Photo by Jason Merritt/Getty Images)

#88 - SWV

(Photo by Kevin Winter/Getty Images)

#87 - Robyn

(Photo credit BJORN LARSSON ROSVALL/AFP/Getty Images)

#86 - Ingrid Michaelson

(Photo by Jason Kempin/Getty Images)

#85 - Faith Evans

(Photo by Rick Diamond/Getty Images for BMI)

#84 - Avril Lavigne

(Photo by Jag Gundu/Getty Images)

#83 - Meg White

(Photo by Malcolm Taylor/Getty Images)

#82 - Miley Cyrus

(Photo by Jason Merritt/Getty Images)

#81 - Spice Girls

(Photo credit CARL DE SOUZA/AFP/Getty Images)

#80 - Sara Bareilles

(Photo by Eugene Gologursky/Getty Images for Esquire Apartment)

#79 - PJ Harvey

(Photo credit FRED TANNEAU/AFP/Getty Images)

#78 - Kim Gordon (Sonic Youth)

(Photo by Juan Naharro Gimenez/Getty Images)

#77 - Hayley Williams (Paramore)

(Photo by Kevin Winter/Getty Images)

#76 - Leona Lewis

(Photo by Sean Gallup/Getty Images for Doha Film Institute)

#75 - Kim Deal (The Breeders, The Pixies)

(Photo by Kevin Winter/Getty Images)

#74 - Paula Abdul

(Photo by Mark Davis/Getty Images)

#73 - Dido

(Photo by Jo Hale/Getty Images)

#72 - Brandy

(Photo by Frennie Shivambu/Gallo Images/Getty Images)

#71 - Natalie Merchant

(Photo by Jemal Countess/Getty Images)

#70 - Macy Gray

(Photo credit should read TIZIANA FABI/AFP/Getty Images)

#69 - Courtney Love

(Photo by Jemal Countess/Getty Images)

#68 - Indigo Girls

(Photo by Ethan Miller/Getty Images)

#67 - M.I.A.

(Photo by Christopher Polk/Getty Images)

#66 - Natasha Bedingfield

(Photo by Stephen Lovekin/Getty Images for UNICEF)

#65 - Liz Phair

(Photo by Brendan Hoffman/Getty Images)

#64 - Eve

(Photo by Frazer Harrison/Getty Images for Alexander McQueen)

#63 - Jill Scott

(Photo by Kevin Winter/Getty Images for NAACP Image Awards)

#62 - LeAnn Rimes

(Photo by Christopher Polk/Getty Images for American Giving Awards)

#61 - Shirley Manson

(Photo by Frazer Harrison/Getty Images)

#60 - Florence and the Machine

(Photo by Dave Hogan/Getty Images)

#59 - Destiny's Child

Singers Kelly Rowland, Beyonce Knowles and Michelle Williams(Photo by Ronald Martinez/Getty Images)

#58 - Miranda Lambert

(Photo by Kevin Winter/Getty Images)

57 - Ke$ha

(Photo by Janet Jarman/Getty Images)

#56 - Gloria Estefan

(Photo by Jesse Grant/Getty Images for NCLR)

#55 - Fiona Apple

(Photo by Frederick M. Brown/Getty Images)

#54 - Tori Amos

(Photo credit RICK NEDERSTIGT/AFP/Getty Images)

#53 - Sarah McLachlan

(Photo by Jag Gundu/Getty Images)

#52 - En Vogue

(Photo by Valerie Macon/Getty Images)

#51 - Nelly Furtado

(Photo credit MARK RALSTON/AFP/Getty Images)

#50 - Lauryn Hill

(Photo by Jason Miller/Getty Images for Rock & Roll Hall Of Fame)

#49 - Amy Lee (Evanescence)

(Photo credit ODD ANDERSEN/AFP/Getty Images)

#48 - Aaliyah

Photo by Kevin Winter/Getty Images.

#47 - Kylie Minogue

(Photo by Elite Model World via Getty Images)

#46 - Toni Braxton

(Photo by Jim McIsaac/Getty Images)

#45 - Lil' Kim

(Photo by Ryan Pierse/Getty Images)

#44 - Erykah Badu

(Photo by Jemal Countess/Getty Images for Vh1)

#43 - Taylor Swift

(Photo by Kevin Winter/Getty Images)

#42 - Melissa Etheridge

(Photo by Jemal Countess/Getty Images)

#41 - Jewel

(Photo by Michael Loccisano/Getty Images)

#40 - Nicki Minaj

(Photo credit should read ROBYN BECK/AFP/Getty Images)

#39 - Dixie Chicks

(Photo by Lisa Blumenfeld/Getty Images)

#38 - Salt N Pepa

(Photo by Scott Barbour/Getty Images)

#37 - Faith Hill

(Photo by Christopher Polk/Getty Images for PCA)

#36 - Shakira

(Photo by Carlos Alvarez/Getty Images)

#35 - Shania Twain

(Photo by Jason Merritt/Getty Images)

#34 - Queen Latifah

(Photo by Matthew Stockman/Getty Images)

#33 - Norah Jones

(Photo by Larry Busacca/Getty Images For The Recording Academy)

#32 - Fantasia

(Photo by Rick Diamond/Getty Images for Super Bowl)

#31 - Cher

(Photo by Kevin Winter/Getty Images)

#30 - Sade

(Photo by Ethan Miller/Getty Images)

#29 - Bjork

(Photo by Roger Kisby/Getty Images)

#28 - k.d. Lang

(Photo by Frazer Harrison/Getty Images)

#27 - Fergie (Black Eyed Peas)

(Photo by Dimitrios Kambouris/Getty Images)

#26 - Amy Winehouse

(Photo by Graham Denholm/Getty Images)

#25 - Sheryl Crow

Photo by Brendan Smialowski/Getty Images

(Photo by Brendan Smialowski/Getty Images)

#24 - Jennifer Hudson

(Photo by Kevin Winter/Getty Images for NAACP Image Awards)

#23 - Carrie Underwood

(Photo by Christopher Polk/Getty Images)

#22 - Annie Lennox

(Photo credit SEAN DEMPSEY/AFP/Getty Images)

#21 - Celine Dion

(Photo by Ethan Miller/Getty Images)

#20 - Rihanna

(Photo by Dave Hogan/Getty Images)

#19 - Kelly Clarkson

(Photo credit should read ROBYN BECK/AFP/Getty Images)

#18 - Missy Elliott

(Photo by Don Arnold/Getty Images)

#17 - Katy Perry

(Photo by Kevin Winter/Getty Images)

#16 - Jennifer Lopez

(Photo by Kevork Djansezian/Getty Images)

#15 - Alanis Morissette

(Photo by Cameron Spencer/Getty Images)

#14 - Alicia Keys

(Photo by Larry Busacca/Getty Images For The Recording Academy)

#13 - Gwen Stefani

(Photo by Francois Durand/Getty Images)

#12 - TLC

(Photo by Vince Bucci/Getty Images)

#11 - Britney Spears

(Photo by Ethan Miller/Getty Images for ABC)

#10 - P!nk

(Photo by Kevork Djansezian/Getty Images for DCP)

#9 - Mary J Blige

(Photo by Christopher Polk/Getty Images For (Belvedere) RED)

#8 - Christina Aguilera

(Photo by Kevork Djansezian/Getty Images)

#7 - Janet Jackson

(Photo by Ryan Pierse/Getty Images)

#6 - Whitney Houston

(Photo by Kevork Djansezian/Getty Images)

#5 - Adele

(Photo by Dave Hogan/Getty Images)

#4 - Lady Gaga

(Photo credit DON EMMERT/AFP/Getty Images)

#3 - Beyonce

(Photo by Kevin Winter/Getty Images)

#2 - Mariah Carey

(Photo by Jason Merritt/Getty Images)

#1 - Madonna

(Photo credit TIMOTHY A. CLARY/AFP/Getty Images)