The glamour model, who's also expecting a child with husband Kieran Hayler, sent her "genuine congratulations" to Peter despite the bitter feud between them in recent years.
Genuine congratulations to Pete and Emily and I hope they are very happy – kids excited xxx— Katie Price (@MissKatiePrice) July 22, 2013
The baby will be the first for Emily, a 23-year-old newly qualified doctor, who started dating Peter in 2010. The couple met when Emily's father, a respected surgeon, operated on Peter to remove kidney stones.
This new arrival will be Peter's third child, following son Junior and daughter Princess. Peter and Emily are said to be "over the moon" about their unexpected bundle of joy due early next year.
What do you think?
RITA ORA "LOVES" WIFEY CARA DELEVINGNE AND DENIES BUST-UP
AVICII IS NUMBER ONE FOR BIRTH OF ROYAL BABY
BURTON AND TAYLOR: WHAT'S THE REAL STORY?