×This is a no-brainer: Dance experience IS necessary.

On the season opener of “Dancing with the Stars,” those with dance backgrounds got great scores and an edge in the competition.

Among the semi-pros:

• Actress Elaine Hendrix, who had “professional dancer” on her resume and got one of the best initial scores.

• Whitney Leavitt, one of the “Mormon Wives” and a former rival to one of the “DWTS” pros. She landed a 15, the night’s best score.

• Fifth Harmony star Lauren Jauregui, who got one of the night’s 13s, and admitted her stage performance experience helped quell the nerves.

• Hilaria Baldwin, who quit dance after a hip injury, married Alec Baldwin and is the mother of seven. She got a 14 and proved those hip screws are holding.

A hands-down winner? Not yet. But former champ Bin

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