Kelly Clarkson Has Us 'Weak' in the Knees Over Her SWV Cover

Kelly Clarkson knows her way around a '90s R&B ballad -- as evidenced by her multiple Toni Braxton covers on The Kelly Clarkson Show -- and for her latest Kellyoke performance, she revisits the decade again for SWV's "Weak."

Surrounded by appropriately romantic mood lighting, Clarkson forms her very own girl group with her backup singers for the note-perfect cover.

"Weak" spent two weeks at No.1 on the Billboard Hot 100 in 1993 -- the first and only chart-topper for the trio.

Watch Clarkson's cover below:

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