Kimora Lee Simmons and husband Tim Leissner are expecting their first child.

The 39-year-old designer is reportedly four months pregnant, according to Page Six.

The couple were spotted celebrating the news at Gallaghers Steakhouse in New York on Saturday.

Simmons and Leissner have been together since 2013, and were revealed to be married in February.

The designer is already mother to 14-year-old daughter Ming and 12-year-old daughter Aoki with ex-husband Russell Simmons, and 5-year-old son Kenzo with ex-boyfriend Djimon Hounsou.