The 34-year-old star was asked about the possible wedding at the red carpet of the UNICEF's 70th-anniversary event and the actress said she "would love to go anytime," reported E! Online.
"I love London. I would go anytime... I mean the Queen just has to invite me if that's what you're asking!" the "Quantico" star said.
Not revealing much about the couple's romance, Priyanka continued, "I'm a friend. And I'm going to be a good friend to whatever my friends' needs, not just her."
Just two weeks ago, Priyanka stepped out for a girls' night out with Markle and filmmaker Mubina Rattonsey.
"Girls just wanna have fun @meghanmarkle @mubinarattonsey #LAlife," Priyanka captioned the photo.