Celebrity Birthdays: Happy Birthday, Rihanna!

Dr. Dre, Toni Morrison and Sidney Poitier also celebrate.

Rihanna: February 20 - Bad gal Rih Rih is as naughty as ever on her 26th birthday.  (Photo: Dimitrios Kambouris/Getty Images for MAC Cosmetics)

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Rihanna: February 20 - Bad gal Rih Rih is as naughty as ever on her 26th birthday.  (Photo: Dimitrios Kambouris/Getty Images for MAC Cosmetics)

Lou Diamond Phillips: February 17 - The La Bamba actor celebrates his 52nd birthday. (Photo: Jason Merritt/Getty Images)

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Lou Diamond Phillips: February 17 - The La Bamba actor celebrates his 52nd birthday. (Photo: Jason Merritt/Getty Images)

Photo By Photo: Jason Merritt/Getty Images

Michael Jordan: February 17 - The newlywed — and new father of twins! — is starting over at 51. (Photo: Chuck Burton/AP Photo, File)

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Michael Jordan: February 17 - The newlywed — and new father of twins! — is starting over at 51. (Photo: Chuck Burton/AP Photo, File)

Photo By Photo: Chuck Burton/AP Photo

Chanté Moore: February 17 - The jazz and R&B singer turns 47 this week.   (Photo: Angela Weiss/Getty Images for TV One)

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Chanté Moore: February 17 - The jazz and R&B singer turns 47 this week. (Photo: Angela Weiss/Getty Images for TV One)

Photo By Photo: Angela Weiss/Getty Images for TV One

Toni Morrison - Toni Morrison, winner of a Nobel Prize and Pulitzer Prize and a member of France’s Legion of Honor, received the Presidential Medal of Freedom in 2012. (Photo: Francois Durand/Getty Images)

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Toni Morrison: February 18 - The Nobel Prize-winning author celebrates her 83rd birthday. (Photo by Francois Durand/Getty Images) 

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John Travolta: February 18 - The Saturday Night Fever star turns 59. (Photo: John Sciulli/Getty Images for G'Day Australia)

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John Travolta: February 18 - The Pulp Fiction star celebrates his 60th birthday. (Photo: John Sciulli/Getty Images for G'Day Australia)

Dr. Dre: February 18 - The Cali rapper and super-producer turns 49 years old. (Photo: Christopher Polk/Getty Images for Coachella)

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Dr. Dre: February 18 - The Cali rapper and super-producer turns 49 years old. (Photo: Christopher Polk/Getty Images for Coachella)

Juelz Santana, @thejuelzsantana - Tweet: "Hitta is Not Another Word 4 Ni&&a It's Chicago slang For Shooter jus incase y'all ain't know"Maybe it was YG who confused a few people when he used "hitta" in place of "n---a" for the clean version of his hit club banger "My N---a," but whatever the case, Juelz felt the need to let rap fans know that the two terms are not synonymous. #UGonLearnToday(Photo: Neilson Barnard/Getty Images for BMI)

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Juelz Santana: February 18 - The Harlem-raised member of The Diplomats celebrates his 32nd birthday. (Photo: Neilson Barnard/Getty Images for BMI)

Smokey Robinson: February 19 - The legendary singer-songwriter is still a force at 74. (Photo: Donald Kravitz/Getty Images)

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Smokey Robinson: February 19 - The legendary singer-songwriter is still a force at 74. (Photo: Donald Kravitz/Getty Images)

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Seal: February 19 - The recently divorced British singer turns 50.   (Photo: Ragnar Singsaas/Getty Images)

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Seal: February 19 - The British singer, and Heidi Klum's ex, celebrates his 51st birthday. (Photo: Ragnar Singsaas/Getty Images)

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Sidney Poitier - The Academy Award-winning actor (the second African-American to do so) and diplomat received the award from President Obama in 2009.(Photo: Chip Somodevilla/Getty Images)

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Sidney Poitier: February 20  - The Academy Award-winning actor and Hollywood trail blazer turns 87 years old. (Photo: Chip Somodevilla/Getty Images) 

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Nancy Wilson: February 20 - The jazz great and sometime-actress celebrates her 75th birthday.  (Photo: Bryan Bedder/Getty Images)

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Nancy Wilson: February 20 - The three-time Grammy winning singer celebrates her 77th birthday. (Photo: Bryan Bedder/Getty Images)

Charles Barkley: February 20 - The NBA legend-turned-commentator turns 49. (Photo: Alberto E. Rodriguez/Getty Images)

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Charles Barkley: February 20 - The former NBA player-turned-commentator turns 51 years old this week. (Photo: Alberto E. Rodriguez/Getty Images) 

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Stephon Marbury: February 20 - The former New York Knicks player, who now plays for the Beijing Ducks, turns 37. (Photo: Nick Laham/Getty Images)

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Stephon Marbury: February 20 - The former New York Knicks player, who now plays for the Beijing Ducks, turns 37. (Photo: Nick Laham/Getty Images)

Blanket Jackson: February 21 - Michael Jackson's youngest son celebrates his 12th birthday this week. (Photo: Valerie Macon/Getty Images)

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Blanket Jackson: February 21 - Michael Jackson's youngest son celebrates his 12th birthday this week. (Photo: Valerie Macon/Getty Images)

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Corbin Bleu: February 21 - The High School Musical star celebrates his 24th birthday.  (Photo: Charley Gallay/Getty Images for Grey Goose)

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Corbin Bleu: February 21 - The High School Musical star is all grown up at 25. (Photo: Charley Gallay/Getty Images for Grey Goose)

Photo By Photo: Charley Gallay/Getty Images for Grey Goose

Julius Erving: February 22 - The retired NBA legend turns 63.   (Photo: Frazer Harrison/Getty Images)

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Julius "Dr. J" Erving: February 22 - The retired NBA great celebrates his 64th birthday.(Photo by Frazer Harrison/Getty Images)

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Drew Barrymore: February 22 - The actress and second-time mom-to-be turns 39.  (Photo: Michael Buckner/Getty Images for Entertainment Industry Foundation)

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Drew Barrymore: February 22 - The actress and second-time mom-to-be turns 39.  (Photo: Michael Buckner/Getty Images for Entertainment Industry Foundation)

Photo By Photo: Michael Buckner/Getty Images for Entertainment Industry Foundation

Niecy Nash on being a relationship guru among her friends:  - “My friends call me their relationship nanny so we have a good time working through problems. Now I don’t claim to be an expert, but I am a woman who has been through everything. I’ve been married, divorced; I’ve been the baby momma, the side piece and the secret…”

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Niecy Nash: February 23 - The Reno 911! star celebrates her 44th birthday. (Photo: Astrid Stawiarz/Getty Images)

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Aziz Ansari: February 23 - The comedian and Parks and Recreation star turns 31 this week. (Photo: Jason Merritt/Getty Images)

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Aziz Ansari: February 23 - The comedian and Parks and Recreation star turns 31 this week. (Photo: Jason Merritt/Getty Images)

Photo By Photo: Jason Merritt/Getty Images