Joe and his actress fiancee flew in to India last week for the pre-wedding festivities, while Kevin and his wife were delayed due to a house move back in the U.S., according to reports.
The weekend wedding is all set to be an epic affair with and insider telling news show Entertainment Tonight, "The couple and the people that mean the most to them will celebrate all week with different Indian traditions and various parties. Nick and Priyanka are excited to get married and start the New Year as husband and wife."
Reports suggest Jonas and Chopra will have two ceremonies - a traditional Indian wedding and a Christian service officiated by Nick's father. Both will be held in different parts of the palace.
Meanwhile, the pop star will observe traditional Indian wedding attire, arriving on horseback, wearing a turban and brandishing a sword.
Priyanka's big day will come just days after the release of shots from her first Vogue cover, which went live online on Thursday.
The Indian star will front the January, 2019 issue.
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Surprise: @priyankachopra is our January cover star! Here is an exclusive sneak peek at her cover shoot; tap the link in our bio to read our full interview with Chopra on her and @nickjonas’s modern-day love story, their upcoming wedding plans, her boundary-breaking career, and more. Photographed by #AnnieLeibovitz, styled by @tonnegood, Vogue, January 2019
Opening up about the wedding details in the magazine, Chopra jokes, "People will need vacations after this wedding... Two very different cultures and religious backgrounds, and the beauty of it was, there was so much love and acceptance for our side, (while) Nick's mother thinks she was Indian in a past life. She rocks a sari."
The bride will wear a custom Ralph Lauren gown, according to Vogue.