The singer wrote in his column for a UK weekly gossip mag: ‘Did that nine months even happen? She is back to normal.’
23-year-old Emily is apparently back to her regular size after giving birth just 4 weeks ago.
Pete continued: ‘She won’t say it but I can. She’s like, ‘I need to go to the gym’ and I’m thinking, ‘Are you for real?! I can see your abs three weeks after the birth!’ She looks great.’
Towards the end of her pregnancy, Emily revealed that she was still wearing her size 8 jeans.
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‘I haven't weighed myself because I don't want the pressure. If I do put weight on, it's one of those things, but I'm still in my size 8 jeans because it's a very high bump.’
The 40-year-old singer became a parent for the third time earlier this year when fiancée Emily delivered their daughter after a dramatic labour.
The couple were stuck in traffic for 4 hours before eventually making it to the hospital.
Peter revealed his daughter’s name on Twitter after fans waited in anticipation for 3 weeks after the announcement of the birth.