Adele, who kept her pregnancy under wraps until the last minute, has said she is due to give birth in two months.
Adele, 24, announced she was expecting her first baby with boyfriend Simon Knoecki, 36, on June 30.
The singer is due to have her baby in September, meaning she was six months pregnant when she went public.
In hindsight, all the clues were there before she revealed her news – she didn’t fly to the States for the Billboard Awards in May even though she won 12 gongs.
And she arrived at the Ivor Novello Awards in London a week later dressed in a very loose fitting black dress.
She also snuck in late and refused to speak to the press or pose for photos, even though she is usually very chatty and friendly towards the media.
A source said: “Adele has barely left the house in recent months, so she could keep this to herself for as long as possible.
“She stopped exercising a few months ago, and since then it’s been all about the baby.”
Adele announced her pregnancy on her website and said: “I’m delighted to announce that Simon and I are expecting our first child together.
“I wanted you to hear the news direct from me, obviously we’re over the moon. Yours always, Adele.”
A spokesman for the star said he had “no more information” on Adele’s pregnancy.
The couple started dating last summer and moved in together earlier this year.
Simon Konecki also has a five-year-old daughter with his ex-wife Clary Fisher.