Gigi and Bella Hadid reveal they have secret 23-year-old half sister in surprising statement

Gigi and Bella Hadid have revealed that they have a 23-year-old half-sister in a very surprising statement.

The pair of American-Palestinian supermodels, who are 30 and 28 respectively, are the daughters of now-divorced coupled Yolanda and Mohamed Hadid who also share together one other child together; 25-year-old Anwar.

Mohamed, a real estate developer, also has two children with his first ex-wife, Mary Butler; Alana. 39, and Marielle, 44.

However, Mohamed also has another daughter named Aydan Nix with a different woman from a third relationship.

Supermodels Gigi and Bella Hadid have opened up about their 23-year-old sister (Instagram/@bellahadid)

Gigi and Bella shared the news in a statement to the Daily Mail on Thursday (29 May).

The pair revealed that Aydan was born after a 'brief romance' Mohamed, 76, had with residential mortgage loan expert, Terri Hatfield Dull following his divorce from Yolanda in 2001.

Their statement also explained that Aydan was born and raised in Florida, and grew up with 'the man she lovingly knew as her father until his sudden passing when she was 19'.

However, after his death, Aydan took 'a genetic test out of curiosity', which led her to realise her 'biological connection' to the Hadid children.

Bella, Yolanda, Gigi and Mohamed Hadid (Dimitrios Kambouris / Staff / Getty Images)

"We first connected in late 2023, and from that moment on, we’ve embraced Aydan with open arms," the Hadid sisters said.

"She’s spent time with all of us, including our dad, and we’ve cherished this unexpected and beautiful addition to our family," the statement continued. "As siblings, we’ve had many open and loving conversations - with Aydan included - about how to support and protect her.

"Aydan and her family value their privacy, and we fully respect that. We kindly ask others to do the same and honor her wish and right to her anonymity as she continues her life as a young woman in New York," the statement concluded.

Aydan Nix, 23, is Mohamed's youngest child of six (Instagram/@toospoiled)

The outlet also reported that Mohamed and Terri's relationship ended before she discovered she was pregnant with Aydan.

According to a family source, Mohamed is 'cordial and pleasant' with his sixth child.

"There’s mutual respect," the source said, per the Daily Mail. "But there’s also discretion."