The Girls Aloud star was photographed arriving at Heathrow Airport in London on Friday morning (27 September), where her baby bump was just visible under her thick black coat.
Despite the long haul flight, 28-year-old Nadine looked radiant and beamed for photographers as she made her way out of the terminal.
The 'Love Machine' singer has not publicly confirmed who the father of her child is, but she was accompanied by former fiancé and NFL player Jason Bell. Does this confirm all those rumours that the couple are now back together and about to be parents?
Nadine surprised fans by announcing her pregnancy news in the middle of August. She revealed the news by posting a picture of herself looking surprised alongside the caption: "I'm having a baby x."
Since then, she has remained relatively tight-lipped about impending motherhood, so we have no idea if she's expecting a girl or boy or when her due date is.
We do know, however, that her baby is going to have one fabulous wardrobe! The singer tweeted a picture last week giving fans a glimpse inside the already designer-packed closet. She added the caption: "Baby's beginner wardrobe. It feels like a dream, a really great dream I don't want to wake up from."
There's no word on why she's back over in the UK. The Northern Irish-beauty has called Los Angeles home for many years.
More stars expecting babies in our gallery below:
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