Rainey Qualley, the 28-year-old singer-songwriter daughter of Golden Globe winner Andie MacDowell, says she and sister Margaret, a 23-year-old actress on “The Leftovers,” are haunted by weird nocturnal visions.

“My sister and I both have a hard time sleeping,” Qualley tells The Post at Anna Sui’s fashion show. “We live together in Los Angeles, so we’ll make coffee in the morning and tell each other stories about what happened in our dreams last night.

“It’s kind of like a nice ritual,” adds the performer, who sat near Sofia Coppola, Coco Rocha and Rocha’s daughter, Ioni.

Qualley, who records under the stage name Rainsford, recently wrapped up a tour for her latest EP, “Emotional Support Animal.”

She’s now working on new material, using her sleep struggles as inspiration.

“Most of my songs are deeply personal, so they’re about relationships or depression or whatever I’m going through at the moment,” says the musician, one of MacDowell’s three kids with model Paul Qualley. “I’ve been having a lot of f–ked up dreams, so I’ve been writing about that. Sometimes f–ked up good, sometimes f–ked up bad. Just, like, really intense.”