Ivanka Trump, the daughter of property mogul Donald Trump, announced the birth of her first child in New York City via Twitter.
Ms Trump, who has worked as a model, jewellery designer and aide to her father on the US version of The Apprentice, said she and husband Jared Kushner “welcomed a beautiful and healthy little girl into the world”.
No name was announced.
Mr Kushner is the owner of the New York Observer newspaper. He and Ms Trump wed in 2009. She converted to Judaism before the wedding.
The baby is the third grandchild for real estate mogul Donald Trump. Ivanka Trump’s brother Donald Trump Jr and his wife, Vanessa, have a daughter and a son.