Leona Lewis Performs 'Happy' on 'The Ellen DeGeneres Show' (VIDEO)

After citing illness as a reason why she should be forgiven for lip syncing on 'Dancing with the Stars,' Lewis needed to prove to us again why Simon Cowell made her a star.
In her appearance yesterday on 'The Ellen Degeneres Show,' it seems like Lewis really deserves to be 'Happy' with her performance.

The jury might be out on whether or not this is a lip-synced performance -- but you can be the judge. Watch this clip of Lewis performing her latest single, 'Happy.'

Watch the video from Daily Drama after the jump.After citing illness as a reason why she should be forgiven for lip syncing on 'Dancing with the Stars,' Lewis needed to prove to us again why Simon Cowell made her a star.
In her appearance yesterday on 'The Ellen Degeneres Show,' it seems like Lewis really deserves to be 'Happy' with her performance.

The jury might be out on whether or not this is a lip-synced performance -- but you can be the judge.

Watch this clip of Lewis performing her latest single, 'Happy.'

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