Twins Mary-Kate and Ashley Olsen stepped out in New York City to celebrate their 27th birthday on Wednesday. And we just could not help but notice that they went back to their childhood days and opted to wear matching sandals.

The twins are known for their individual approach to fashion but maybe the shoes were a birthday gift to one another.

Aside from the fact that Mary-Kate's sandals were blue and black whilst Ashley's were white and black, there was no mistaking the deliberate co-ordination, according to the Daily Mail.

The style of the two actresses has evolved over the years, while in their youth the celebrities dressed alike however as they grew older they began to step into the fashion world.

For their birthday attire the twins decided to stick with an all black color scheme and dark sunglasses.

[For Photos of Mary-Kate and Ashley Olsen on their birthday click HERE]

Mary-Kate wore skinny black jeans and a black leather jacket with her blonde hair pulled back into low ponytail.

However Ashley decided to wear skinny jeans that were covered by a flowing, full length dress coat. The actress turned designer decided to pull her hair up into a messy bun and both women carried black handbags.

The actresses' claim to fame was their hit television show "Full House" but now the two have grown up and become fashion icons in their own ways.

Check out the pictures and let us know what you think of Mary-Kate and Ashley Olsen's birthday look. Leave us a comment below.