FITNESS influencer Emily Skye has given birth to her second child unexpectedly in the loungeroom of her Gold Coast home.

The 35-year-old welcomed baby boy Izaac on Thursday at 37 weeks pregnant, in what Skye described as "a wild one".

In a series of raw Instagram photos taken just after the birth, Skye is lying on a mat in her loungeroom, with her head resting on a child's chair as two paramedics assist her.

Her husband Declan Redmond looked stressed as he cradled the couple's two-year-old daughter, Mia Elise.

"Well THAT was unexpected!!" Skye wrote alongside the Instagram post.

"Little Izaac just couldn't wait any longer to enter the world!! … I'll share with you our birth story soon!! Be ready, it's a wild one!"

Skye, who has 2.5 million followers and co-founded luxury face mask company James Cosmetics, then joked "what birth plan".

She had a surprise baby shower on the Gold Coast one week ago.

"I'm not sure if you're ever really "ready"" she wrote at the time. "I thought I was before having Mia but soon found out I wasn't BUT you just go with it and get through it one day at a time."

Originally published as Emily Skye's 'wild' home birth