Rory Kennedy and Taylor Swift.

PARK CITY, Utah - The premiere of HBO's "Ethel" brought out a cast of Kennedys: Rory Kennedy, who made the biopic about her mom, Ethel Skakel Kennedy, Bobby Kennedy Jr., Bobby Kennedy III, Matt Kennedy, Kerry Kennedy and … Taylor Swift.

There were more notable guests but the country-pop crossover singer stood out next to the members of the iconic American family. Why was she there? She said in a recent interview with  Vogue that she met the 83-year-old Kennedy and felt "starstruck."

"The only time in my life I have ever been starstruck was meeting Caroline and Ethel Kennedy," she said. "I got to spend the afternoon with Ethel a couple of weeks ago. She is one of my favorites, because you look back at the pictures of her and Bobby, and they always look like they are having the most fun out of everybody. You know, 11 kids, all these exotic animals on their property. I've read a lot about them."

Swift didn't chat with reporters on the red carpet today, but judging from the photo above, she's enjoying hanging out with the Kennedy clan.