Mary-Kate and Ashley Olsen’s Birthday! 10 Top Ways To Tell The Famous Twins Apart (PHOTOS)

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Olsen's Wild Style
See Mary-Kate & Ashley Olsen’s 25 Wild Styles.
Hollywood’s favorite twins turn 26 today!

Mary-Kate and Ashley Olsen stole America’s hearts at the tender age of seven months when they began their joint role as Michelle Tanner on the television series Full House.

The duo is now known as two of the most style-savvy designers in the fashion business; at just 18, they took charge of their brand, Dualstar, and turned it into a billion dollar empire.

Ironically, the blonde beauties were born fraternal twins despite their identical looks.  To cease any confusion, Celebuzz has broken down the 10 top ways to tell them apart.  Click through the gallery above to get a quick lesson on who’s who.

From opposite hairstyles to the freckles on their face, these two peas-in-a-pod have still managed to keep their individuality.

The twins were first made famous through acting and modeling, but they continue to build their success today with their wildly popular clothing lines: Olsenboye, Elizabeth and James and The Row.

Can you tell the sisters apart by first glance? Sound off in the comments and leave your Happy Birthday wishes in the comments!