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Pippa Middleton is about to star in another wedding: her own.

Duchess Kate's sister got engaged over the weekend to her boyfriend James Matthews, according to the Daily Mail, who said the millionaire hedge fund manager popped the question at the scenic Lake District in England.

She said yes.

Pippa, 32, was "completely and totally surprised" by the proposal, a source told the newspaper.

Another source added that James, 40, asked Pippa's father, Michael Middleton, for permission before getting down to one knee.

"James is a traditionalist and very much wanted to do things properly. That meant getting his future father-in-law's consent," the source said. Another family friend said Pippa's parents "are very happy. They like James and they are sure he will make Pippa very happy."

The couple has been dating less than a year, but they did date briefly in 2012, as well.

Rumors of the relationship first surfaced last September when they were spotted at his home, later taking his dog for a walk.

They have been virtually inseparable since, vacationing together and taking in the Wimbledon tennis tournament earlier this month. Neither has publicly confirmed that they are dating. Friends say Pippa and James are two peas in a pod.

"They love physical challenges," a friend told the Mail. "Pippa has swum the Bosphorus, climbed Mont Blanc and cycled across America. It makes them a good match. Earlier this year they completed a 33 mile cross country ski race in Norway."

While James reportedly had an upscale upbringing, he amassed his fortune on his own, friends say.

"Many people will say what a lucky guy James is for landing Pippa. I would say she's the lucky one. He's one hell of a catch," one friend said.

The Mail anticipates that the wedding will happen in 2017.

Although designers will surely be lining up to dress Pippa for the big day, many will always remember her for her white form-fitting Alexander McQueen dress that she wore at Prince William and Kate's nuptials in 2011.

In 2014, Pippa joked that famous dress fit "too well."

"As I have found out, recognition has its upside, its downside and—you may say—its backside," she said at a Women in Advertising and Communications dinner.

Two years earlier she told the Mail, "It is a bit startling to achieve global recognition before the age of 30 on account of your sister, your brother-in-law and your bottom. One day I might be able to make sense of this. In the meantime I think it's fair to say that it has its upside and its downside."