It's only natural for any musical performer to draw inspiration from his or her personal experiences. Hell, if the private lives of artists were deemed untouchable in the creation of art, there would be no art.

That said, Taylor Swift could not have been more blatantly petty in her opening performance at the Grammys.

Swift's circus-themed revue was a bombastic production that left doubts about her singing ability—still there. While her live vocal performance has improved significantly since, say, her shaky duet with Stevie Nicks back on the Grammys stage in 2010… 

…she still doesn't have the full-bodied voice of fellow country singers like Carrie Underwood and Miranda Lambert, both of whom also performed at the Grammys. 

That said, beyond the uber twee rabbit-costumed dancers, the creepy opening monologue bicyclist and the poor bespectacled "bad boyfriend" stand in, the most memorable part of the performance had to be Swift's adoption of a British accent during the mock conversation in the middle of the song. 

"I still love you," the very American singer said with an across the pond inflection.

Now, this being Taylor Swift, that wasn't an accident. Has anybody male and British, whether actually or just according to her, wronged her lately?

So she dinged Harry Styles during a Grammys performance. What's wrong with that? It's not as if other pop stars haven't alluded to their personal lives before—see Justin Bieber's cover of "Cry Me A River" after his break up with Selena Gomez.

But here's the thing—this is all Taylor Swift does. She is a walking, talking, sometimes singing smokescreen of her romantic insecurities, and while it was an initially endearing quality that cemented her status as "the girl next door," now, it just seems trifling. 

No, this isn't a judgment on the fact that she has a long and public dating history. And true, the moment could easily have been lost on first-time listeners to Swift's music, just as it would be a different story if this was the first time that TSwift had adopted the "wronged woman" façade.

But if anybody has any doubts as to the nature of Swift's character, think about this: she called out her teen pop star ex-boyfriend in the middle of a cutesy glorified bitter revenge song, which happened in the course of a showy circus production that Britney Spears did better years ago.

TSwift, this isn't a good look. This hasn't been a good look for a long time. And the fact that this finger-pointing schtick is still the bedrock of your musical achievements, even during the opening performance of the Grammys, is a little sad, a little frustrating and really, really annoying.

Read more of NT's Grammys coverage here.

Reach Music Editor Lilian Min here; follow her on Twitter here and on Google+ here.