Taylor Swift and her neuroses were the couch guests and the performers on last night's (Oct. 23) episode of 'Late Night With David Letterman.'

We admit that beforehand, we were anxious to see how the cute and lovably geeky Swift would hold her own against the sarcastic late night host. The model-tall singer looked pretty in a black party dress with a ruffled skirt and sheer top. America's Sweetheart indeed.

Swift said "yes, absolutely" about voting in the presidential election, and that at 22, she has the right to vote, but not the right to tell anyone what to do, which elicited a fist bump from Letterman.

She spoke about her two car accidents (more like incidents) during her Rolling Stone interview. She said she was nervous about impressing the writer, which forced her to clean her house and her car in anticipation of his arrival.

She was so adorably neurotic, saying she'd hope the writer would talk about her being a safe driver when they took the same car to dinner. But she made a u-turn after going the wrong way...

...proving what a safe driver she is(n't)!

But those details aren't important. It's the fact that T. Swizzle is certainly milking the geek chic, awkwardly adorable thing. You can't help but want to hug her, in addition to scratching your head over why someone so gorgeous and so talented and so beloved is so out of her mind.

She also spoke to Letterman about possibly writing a song about him, at his request. He told her to make up anything she wanted.

Swift changed into a black top and pants to perform the title track from her soon-to-be-million-selling 'Red.' She kept the crimson color relegated to her lips and guitar, and was backed by singers and dancers. She undressed the camera with her eyes several times. It was, like, intense.

All of her previous neuroses were washed away when she took the stage, oozing complete confidence. The girl is most comfortable in her own skin when clutching a guitar and singing in a mic.

Watch Taylor Swift Talk About Making a Song for Dave

Watch Taylor Swift Perform 'Red' on 'Letterman'