The marriage between an heir and heiress of different, ultra-wealthy dynasties is nothing new. In fact, it’s been considered an alliance move for centuries.

Elmo’s unmistakable squawk floats out of the nursery and into the hallway of the downtown penthouse that year-and-a-half-old Lily Grace shares with her parents, James and Nicky Hilton Rothschild, new sister Teddy Marilyn (born this past December), and two cats, Mac and Cheese.

Creative Creative ContentImagesCreative ImagesBrowse millions of royalty-free images and photos, available in a variety of formats and styles, including exclusive visuals you won't find anywhere else. See all creative imagesTop image searches Curated by Getty ImagesPurimEid al-FitrWomen's History…

Creative Creative ContentImagesCreative ImagesBrowse millions of royalty-free images and photos, available in a variety of formats and styles, including exclusive visuals you won't find anywhere else.

So, let's just put the cards on the table. When you are dealing with the Hiltons of Hollywood, really, you could expect the interiors to break either way, right?

An heir and an heiress of the world’s richest families fall in love and decide to raise a family. James Rothschild and Nicky Hilton Rothschild decorated their family home, a chic and child-friendly penthouse in New York City. James Rothschild and Nicky Hilton Rothschild (born Nicky Hilton) met in…

Hotel heiress Paris Hilton’s little sis’ Nicky Hilton married English banking heir James Rothschild at Kensington Palace over the weekend – and the wedding was as glamorous as you’d expect when billionaires wed. View this post on Instagram A post shared by Harper’s BAZAAR (@harpersbazaarus) Nicky…

Hollywood Now: Nicky Hilton’s Interfaith Marriage, Natalie Portman’s Directorial Debut in Israel & Paper Towns’ Nat Wolff Gerri Miller Read more Interfaith Powerhouse Hilton & Rothschild Wed Hotel heiress Nicky Hilton married into one of the oldest—and richest—Jewish interfaith families in the world…