25 looks good on her!
Taylor Swift had a very eventful 25th birthday eve, starting with Z100's Jingle Ball!
As she took the stage, Miz Swift switched gears, wearing a two-piece sparkly plaid ensem as she danced all over the stage during her 20-minute set at Madison Square Garden.
And she made sure to let the crowd know what a big part they were playing in her special day!
Ch-ch-check out more pics of her outfit (above) and watch part of her performance