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While all birthday's are special, some are more significant than others. President Obama, pictured during an event to promote clean energy vehicles at a UPS facility in Landover, Md., April 1, 2011, reached a major milestone today - he turns 50.
Click on to see who else is celebrating a big birthday this month.
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Martha Stewart, at a book celebration for "Makeup Your Mind: Express Yourself" by Francois Nars on May 24, 2011, in New York, turned 70 on Aug. 3.
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Singer Tony Bennett also celebrated his birthday on Aug. 3. The multi-Grammy winner, seen performing at the Palms Casino Resort on July 24, 2011, in Las Vegas, turned 85.
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Fromer President Bill Clinton, seen boarding Air Force One at Andrews Air Force Base, Feb. 3, 1998, will be 65 on Aug. 19.
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Joe Jonas, seen at Maxim's Hot 100 party on May 11, 2011, in Los Angeles, will be able to legally order a cocktail come Aug. 15. The singer and actor is turning 21.
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Actress and singer Lea Michele, seen at the "Glee" Academy Screening and Q&A on May 4, 2011, in Hollywood, Calif., will be joining the quarter century club on Aug. 29.
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They grow up so quickly. Actors and identical twins Dylan and Cole Sprouce, pictured at the 2007 Creative Arts Emmy Awards on Sept. 8, 2007, in Los Angeles, are celebrating their 18th birthday today.
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Actress Rachel Bilson, seen at the the Chanel Collection Resort 2011-12 show on May 9, 2011, in Cap d'Antibes, France, is turning the big 3-0 on Aug. 25.
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"One Tree Hill" actor Chad Michael Murray is also turning 30 this month. His birthday is on Aug. 24.
Robert Redford
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Actor Robert Redford, at the 10th Annual New York Times Arts & Leisure Weekend photo call on Jan. 9, 2011, in New York, can look forward to turning 75 on Aug. 18.
Fred Durst
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Aug. 20 won't just be another day for Fred Durst. The Limp Bizket frontman and director, pictured at the screening of "The Education of Charlie Banks" on March 18, 2009, in Los Angeles, is turning 40.
Pete Sampras
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Tennis champ Pete Sampras, seen at the Los Angeles Tennis Open on July 27, 2009, will also welcome his 40s this month. His birthday is on Aug. 12.
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Actress Kim Cattrall, seen at the "Meet Monica Velour" premiere on March 29, 2011, in New York, will have 55 reasons to celebrate on Aug. 21.
Connie Chung
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Journalist Connie Chung, pictured during the 2007 Tribeca Film Festival on May 1, 2007, in New York, turns 65 on Aug. 25.
