Child stars Mary-Kate and Ashley Olsen may have been big actresses as kids, but as young women, they have made a new name for themselves.

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In the December 2014 issue of Elle, the twin sisters talked about their clothing line that is officially 10-years-old after launching in 2004.

"It's hard to believe it's been 10 years," Mary-Kate said of the label called The Row.

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According to the magazine, the label generates sales in the tens of millions and is carried in more than 145 boutiques and department stores throughout the country.

The girls admitted that they have had some moments when things didn't go according to plan. But naturally, they managed to pull through.

"If something doesn't work out, that's fine," Mary-Kate said. When it comes to making changes, the sisters have been curious on how that would work out.

"We just wondered what would happen to the shapes if we turned everything upside down," Mary-Kate said.

"I think we do things because we stare at them for too long," Ashley added with a laugh.

While their work seems to be going smoothly, there has been some speculation on one of the sisters with rumors saying that Mary-Kate may have had some facial work done. When she arrived to the 2014 World of Children Awards with her twin, it seemed easier to tell the girls apart.

Check out the photo on Wonderwall here.