10/29/2014 10:26 EDT | Updated 10/29/2014 10:59 EDT

Taylor Swift Shows Off Her Mature Style In Two Cool Outfits

We can't shake off Taylor Swift's incredible style!

On Tuesday, the "Shake It Off" singer sported not one but two incredible outfits when she went on "The Late Show With David Letterman" in New York City.

As she made her way into the Ed Sullivan Theater, the 24-year-old stunner turned heads in a plunging black Antonio Berardi dress with green panels and sequin embroidery. Black pumps and a confident attitude rounded out the statement-making look.

But one dress wasn't enough for the chart-topper! Lena Dunham's bestie changed into a ladylike ensemble that featured a long-sleeve top with a check pattern and a black A-line skirt. Sporting her signature red lips and matching booties, the "Out of the Woods" songtress flaunted her new mature look with ease.

It's no accident though that Taylor looks so happy. According to reports, her new album "1989" is on track to sell one million copies. Congrats, Tay!

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