Celebrity Birthdays: Happy Birthday, Janet Jackson!

Grace Jones, Dennis Rodman and others also celebrate.

Janet Jackson: May 16 - The pop icon and newlywed celebrates her 47th birthday. (Photo: Brian Dowling/PictureGroup)

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Janet Jackson: May 16 - The pop icon and newlywed celebrates her 47th birthday. (Photo: Brian Dowling/PictureGroup)

Franklyn Ajaye: May 13 - The comedy writer, who starred in TV's The Parent 'Hood, turns 63. (Photo: Frederick M. Brown/Getty Images)

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Franklyn Ajaye: May 13 - The actor, comedian and jazz musician turns 64.  (Photo: Frederick M. Brown/Getty Images)

Darius Rucker: May 13 - The Hootie & the Blowfish singer celebrates turning 46. (Photo: Jason Merritt/Getty Images)

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Darius Rucker: May 13 - The Hootie and the Blowfish front man celebrates his 47th birthday. (Photo: Jason Merritt/Getty Images)

Dennis Rodman: May 13 - The former NBA star known as "The Worm" turns 51. (Photo: Judy Eddy/WENN.com)

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Dennis Rodman: May 13 - The former NBA star and impromptu diplomat turns 52.  (Photo: Judy Eddy/WENN.com)

Stevie Wonder: May 13 - The "Isn't She Lovely" singer turns 63. (Photo: Brad Barket/PictureGroup)

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Stevie Wonder: May 13 - The "Isn't She Lovely" singer turns 63. (Photo: Brad Barket/PictureGroup)

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Stephen Colbert: May 13 - The faux-conservative television host turns 48. (Photo: Imeh Akpanudosen/Getty Images)

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Stephen Colbert: May 13 - The Colbert Report host celebrates his 49th birthday. (Photo: Imeh Akpanudosen/Getty Images)

Shanice: May 14 - The singer turns 48.(Photo credit: Retna Digital/Ltd.)

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Shanice Wilson: May 14 - The '90s R&B songstress turns 40.  (photo: Retna Digital / Retna Ltd.)

Photo By Photo credit: Retna Digital/Ltd.

Raphael Saadiq: May 14 - The Tony! Toni! Toné! member celebrates his 46th birthday.(Photo: Fernando Leon/Getty Images for TIME)

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Raphael Saadiq: May 14 - The R&B star-turned-producer celebrates his 47th birthday. (Photo: Fernando Leon/Getty Images for TIME)

Photo By Photo: Fernando Leon/Getty Images for TIME

Emmitt Smith: May 15 - The football legend and former Dancing with the Stars contestant turns 43.(Photo: Andy Kropa/Getty Images)

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Emmitt Smith: May 15 - The former NFL all-star turns 43. (Photo: Andy Kropa/Getty Images)

Photo By Photo: Andy Kropa/Getty Images

Ralph Tresvant: May 16 - The New Edition member turns 44. (Photo: Ethan Miller/Getty Images)

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Ralph Tresvant: May 16 - The New Edition member turns 44. (Photo: Ethan Miller/Getty Images)

Photo By Photo: Ethan Miller/Getty Images

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Tahj Mowry, Baby Daddy (ABC Family) - Proving once again that his older sisters aren't the only ones in the Mowry family with talent, Tahj will play a friend of Ben, a surprise dad to a baby girl when she's left on his doorstep by an ex-girlfriend.(Photo: REUTERS/Gus Ruelas/Landov)

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Tahj Mowry: May 17 - Tia's and Tamera's little bro turns 27. (Photo: Gus Ruelas/REUTERS /Landov)

Photo By Photo: Gus Ruelas/REUTERS /Landov

Tony Parker: May 17 - The NBA star and Eva Longoria's ex turns 30.(Photo: Kristian Dowling/PictureGroup)

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Tony Parker: May 17 - The French-born NBA player celebrates his 31st birthday. (Photo: Kristian Dowling/PictureGroup)

Photo By Photo: Kristian Dowling/PictureGroup

Sugar Ray Leonard: May 17 - The boxing legend celebrates his 56th birthday. (Photo: Frederick M. Brown/Getty Images)

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Sugar Ray Leonard: May 17 - The famed boxer celebrates his 57th birthday. (Photo: Frederick M. Brown/Getty Images)

Tina Fey mimicking her 7 ½-year-old daughter, Alice, finding out Quvenzhané Wallis was up for an Oscar:  - “'There’s a 9-year-old?! There’s a 9-year-old?!'” (Photo: Mike Coppola/Getty Images)

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Tina Fey: May 18 - The 30 Rock actress and comedy writer turns 43.  (Photo: Mike Coppola/Getty Images)

Reggie Jackson: May 18 - The former baseball great celebrates his 67th birthday. (Photo: Jeff Chiu/AP Photo, File)

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Reggie Jackson: May 18 - The former baseball great celebrates his 67th birthday. (Photo: Jeff Chiu/AP Photo, File)

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Grace Jones: May 19 - The groundbreaking beauty turns 65. (Photo: Julian Finney/Getty Images)

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Grace Jones: May 19 - The groundbreaking beauty turns 65. (Photo: Julian Finney/Getty Images)

Photo By Photo: Julian Finney/Getty Images

Kim Zolciak: May 19 - Don't be tardy for the birthday party! The Real Housewives of Atlanta star turns 35. (Photo: Frederick M. Brown/Getty Images)

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Kim Zolciak: May 19 - Don't be tardy for the birthday party! The Real Housewives of Atlanta star turns 35. (Photo: Frederick M. Brown/Getty Images)

Photo By Photo: Frederick M. Brown/Getty Images