It seems like only yesterday we were introduced to Haley and Alex Dunphy on "Modern Family," but in reality, it's been nearly six years.

So, excuse us for doing a double-take when we saw Sarah Hyland and her on-screen little sis Ariel Winter looking all grown up and absolutely gorgeous on the Emmys 2015 red carpet on Sunday (September 20). Seriously, these young ladies know how to slaaaay.

Hyland, 24, stunned in an off the shoulder burgundy dress. Not only are we loving her blond locks -- styled in a super cute (and trendy!) lob -- but the young starlet is also rocking some serious bling.

Meanwhile, Winter, 17, wore a fabulous red Romona Keveza gown with Jerome C. Rousseau heels and Anne Sisteron Jewelry. Now, that is how you rock a red carpet!

Oh, and if that wasn't enough to miss your youth, Nolan Gould -- who plays bb Luke Dunphy -- is a high school graduate. OK, so maybe he graduated at 13 because he's an actual genius, but still! Youth is fleeting, people.