Christmas came early for the Hilton-Rothschild family!
Daughter Teddy Marilyn Rothschild — named after Hilton and sister Paris Hilton‘s paternal grandmother Marilyn June Hawley — was born in New York City.
The heiress, 34, and British banker Rothschild are already parents to Lily-Grace Victoria, who was born in July 2016.
A source tells PEOPLE Hilton’s family flew in from California for the birth, and that the new parents are “so thrilled to give Lily-Grace a baby sister.”
Want all the latest pregnancy and birth announcements, plus celebrity mom blogs? Click here to get those and more in the PEOPLE Babies newsletter.
They may be excited Lily-Grace is a big sister, but the second-time parents didn’t know their newborn’s sex until she was born — Hilton told PEOPLE in November that they were keeping it a surprise and had decorated the nursery “all neutral.”
And though Hilton was insistent she had no preferences on her second child’s sex, she did hint to PEOPLE that she was leaning one way. “I did love having a sister,” she said of her own childhood.
As for how Lily-Grace will be as a big sister, Hilton thinks “she’ll be really sweet.”
“She doesn’t have a jealous bone in her body,” the then-mom-to-be said. “When I hold other babies, she doesn’t care. She’s very sweet.”