Taylor Swift Joins Tim McGraw And Keith Urban For Highway Don't Care In A Little Black Dress!

Who knew Taylor Swift could look THAT good in THAT LBD??
The country singer took to the Vegas MGM Grand Garden Arena stage last night in that backless frock. Joining Tim McGraw and Keith Urban for Tim’s Superstar Summer Night, Tay Tay and the boys performed Highway Don├óΓé¼Γäót Care — the same number they performed at the 2013 Academy of Country Music Awards just the night before!
Ch-ch-check out the performance…AFTER THE JUMP!!!

Was the performance actually better the second time around?! We think, YES.
[Image via Getty Images.]