The niece of the late Princess Diana will be converting to Judaism before marrying Jewish fashion tycoon Michael Lewis, reported The Sunday Times this week.

According to the report, Kitty Spencer began “taking religious instruction” toward converting to Judaism following her engagement to Lewis nearly 18 months ago.

Spencer, 29, works as a model for Bulgari and was once listed as one of 2017 Tatler magazine’s most eligible women. She also took center stage at Dolce and Gabbana’s Milan Fashion Week show in September 2018.

Lewis, 61, a father of three children from a previous marriage, earned his fortune as the CEO of the Foschini Group, a retail clothing company based in South Africa. His net worth is estimated to be over $100 million, reports The Daily Mail.

In May 2019, Spencer went public with her relationship with Lewis and in January the couple was engaged.

Prior to her relationship with Lewis, Spencer dated 48-year-old property magnate Niccolo Barattieri di San Pietro. They split in 2017, and he has since started dating 53-year-old British model and actress Elizabeth Hurley.