Miranda Kerr's big baby news revealed

Miranda Kerr and husband Evan Spiegel. Photo / Getty Images

Australian supermodel Miranda Kerr is pregnant with her Snapchat boss husband Evan Spiegel.

The former Victoria's Secret model, 35, is expecting her second child with Spiegel, after the pair gave birth to their first born son, Hart, 10 months ago, according to a world exclusive by The Daily Telegraph.

"Miranda, Evan, Flynn and Hart are looking forward to welcoming the newest member to their family," a spokesperson told the publication.

Kerr already has an eight-year-old son Flynn from her previous marriage with Hollywood A-lister Orlando Bloom.

Kerr and husband Spiegel — who is estimated to be worth $US2.4 billion — were married in a fairytale wedding in May 2017 in the backyard of their Los Angeles home.

They met at a Louis Vuitton dinner party in New York City in 2015, where they exchanged numbers and later hatched up a romantic relationship.

Miranda Kerr is the founder of KORA Organics. Photo / Getty Images

Kerr revealed the night they met, Harper's Bazaar editor-in-chief Glenda Bailey said: "I bet you two are going to get married." They became engaged after 12 months of dating.

Kerr, who was born in Sydney and became the first Australian to appear in the Victoria's Secret runway show in 2007, has previously revealed that she and Spiegel, 28, did not believe in sex before marriage.

In an interview with The Times ahead of their wedding, Kerr suggested the couple were sticking to tradition after being asked about having a baby.

"Not yet. Not until after we get married. My partner is very traditional."

When asked if that meant the pair were waiting to have sex, Kerr replied: "We can't … I mean we're just … waiting."

Kerr is the founder of her own organic skincare line, KORA Organics, which launched in 2009.