HOW do you marry God after you’ve kissed the King?

Easy. Just ask Dolores Hart.

The 73-year-old Benedictine nun is planning to attend the Oscars next Sunday. She will be a lot more covered up than she was the last time she went to the ceremony — in 1959, as a presenter and a gorgeous starlet who had given a blushing Elvis his first screen kiss.

Grace Kelly deserted Hollywood at 26 to become the bride of a prince. Hart, dubbed “the next Grace Kelly,” deserted Hollywood at 24 to become a bride of Christ.

That stunning spiritual elopement is the subject of an Oscar-nominated documentary called “God Is Bigger Than Elvis,” a rare look behind the walls of the cloistered abbey in rural Connecticut where Hart has lived for half a century. (It will be shown on HBO in April.)

“God was the vehicle,” she said of her odyssey. “He was the bigger Elvis.”

Nuns in America are a dying breed, and the church’s antediluvian male hierarchy gets more worked up about allowing Catholic women contraceptives than investigating sexual abuse of children by priests.