Modern Family's Ariel Winter, 13, Debuts Mature Look at Emmys

Credit: Kevin Winter/Getty Images

She plays the brainiac younger daughter, Alex Dunphy on Modern Family, but at Sunday's Emmy Awards, Ariel Winter debuted a jaw-dropping sexy look.

The 13-year-old actress stunned fans when she arrived in a pink floral lace halter-neck gown with a cleavage-baring design.

However, despite her very grown-up appearance, Winter insists she was going for an age-appropriate look.

"I thought it was very youthful, yet mature because it has the flowers and it's blush pink," she told Us Weekly. "I have a sort of body in a way that you can't really put a dress like this without it looking older and more mature, so it's kind of not my fault!"

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The teen also revealed that the dress was four sizes too big, but she knew immediately that it was going to be the perfect dress.

"The color is amazing. Now it fits me very well and I feel really good in it and I think that was the biggest thing for me," she told Us. "I know when I feel great in something that it is going to look great."