The 23-year-old medical student is expecting her child with 'Mysterious Girl' singer Peter next year and they are said to be "over the moon".
Following unconfirmed reports of a pregnancy, Peter's spokeswoman told Reveal: "Yes it is true and they are over the moon."
Speculation that Emily was pregnant arose earlier this year when Peter was seen holding a protective hand over her stomach while at a red carpet event in London.
Last week, Peter admitted in an online video that he wanted to have another baby, adding that he ideally wanted to be married or engaged first.
And yesterday, Emily supported Peter at Music On The Hill festival in Kent and showed a hint of a bump under her loose-fitting white top and denim jeans.
A source has since told The Sun that the pair are "absolutely thrilled" to be starting a family together: "As far as they are concerned they are going to spend the rest of their lives together and will definitely get married in the next year or so."
Peter is already dad to son Junior, 7, and daughter Princess, 6, with his ex-wife Katie Price, who is, coincidentally, also expecting another child.
Peter and Emily met through her father after he performed surgery on Peter three years ago. They've been together for around a year.
The source told the newspaper that Emily would continue to pursue her medical ambitions and still planned to continue in her career as a doctor.
More celebrities expecting babies:
Copyright: Vimeo / Weiss Eubanks