India, Sept. 7 -- Taylor Swift and Travis Kelce's engagement announcement sent fans into overdrive last month. The couple shared the news in an Instagram post that showed Kelce down on one knee in the backyard of his $6 million Kansas City mansion. According to Realtor.com, the two are planning to marry at Swift's Rhode Island estate, though the date has not been confirmed.

With both of them among the most high-profile names in the world, legal experts say their wedding planning will almost certainly include a prenuptial agreement, Realtor.com reported. Swift, who has built a $100 million real estate portfolio, far outpaces Kelce's property holdings, and that difference is expected to factor heavily in the agreement.

Family law attorney...