Beyonce Slays 'National Anthem' -- LIVE!

With people still talking about Beyonce's big lip-syncing controversy, the superstar was out to make a clear statement at a press conference today ahead of her Super Bowl performance, singing a stunning rendition of the national anthem a cappella and 100 percent live.

VIDEO - Beyonce's Inauguration Performance

Donning a white backless mini dress, Beyonce left no doubt about her singing ability, and also explained the decision to use a backing track during her inauguration performance.

"I am a perfectionist -- I practice until my feet bleed and I didn't have time to rehearse with the orchestra. Due to the weather, due to the delay and no proper soundcheck, I didn't feel comfortable taking the risk," she said, citing the importance of the moment. "I decided to sing along to the recorded track which is very common in the music industry, and I'm very proud of my performance."

But Beyonce left no doubt about her upcoming performance Sunday.

"I will absolutely be singing live. This is what I was born to do -- what I was born for."

VIDEO - Beyonce Shares Super Bowl Rehearsal Footage

When asked to comment on some of the backlash she's been receiving from the lip-sync controversy, Beyonce refused to let it get her down.

"I love haters -- no shame, no hate," she said with a smile.

It was also revealed that Beyonce's Dreamgirls co-star Jennifer Hudson will perform America, The Beautiful during the pre-show with a children's choir from Newtown, CT!