Famous twins. Twins -- particularly famous ones -- have served as an endless source of fascination. Arguably America's most famous twins, former child stars Mary-Kate and Ashley Olsen, turn 25 today, and to celebrate we look at other infamous twin offspring.
Mary-Kate and Ashley Olsen
They might be among the best-known twins in the world, having appeared on TV since they were babies.
Tegan and Sara
This Canadian indie band consists of identical twins. The sisters write their songs and play guitar and keyboard.
Dylan and Cole Sprouse
Dylan and Cole Sprouse rose to fame on a Disney Channel sitcom
Max and Emme Anthony
Twins Max and Emme have two famous parents: pop star Jennifer Lopez and Latin crooner Marc Anthony.
Gisele and Patricia Bündchen
Brazilian supermodel Gisele Bündchen has a fraternal twin, Patricia, who is her junior by just five minutes
Scarlett and Hunter Johansson
Blond bombshell Scarlett Johansson was on the arm of her handsome twin brother, Hunter, for last year's White House Correspondents' Association Dinner
Jenna Bush Hager and Barbara Bush
These twins come from a political family. Their father was a president, and so was their grandfather.
Robin and Maurice Gibb
With their brother Barry, they formed one of the '70s' most popular musical groups
Benji and Joel Madden
These twin brothers tour the world as part of a pop-punk band
Charlotte and Samantha Ronson
These London-born sisters lived what appeared to be a bohemian life
Jose and Ozzie Canseco
These Cuban-born brothers made names for themselves on the baseball field
Mario and Aldo Andretti
These two brothers from Italy became known for their racing skills
Ronde and Tiki Barber
Though they spent much of their childhood together, these football players went in different directions as they grew older
Tia and Tamera Mowry
The sisters first came to fame as -- sisters
Ann Landers and Abigail Van Buren
They were twins and also two of America's best-known advice columnists.

Source: msn