She told the paper she was 'ecstatically happy to be pregnant', adding: "It's no secret that our son Zephyr was a longed-for baby, and we are thrilled at the prospect of having a brother or sister for him.
Julia confirmed the news on Twitter today (Friday, September 26), tweeting:
Thrilled to say I'm pregnant. Out with my Mum & big Sis for a big fat Italian lunch (fav Scalini's) .Thanks4 tweets x pic.twitter.com/sqmMhE8JDy
- Julia Bradbury (@JuliaBradbury) September 26, 2014
The day before her announcement, Julia Tweeted a vertigo-inducing Selfie from the top of London's 734-foot high 'Cheesegrater' skyscraper, along with message: "Incredible views from The Cheesegrater & a tummy-in-the-mouth lift ride to the top.fastest in Europe"
- Julia Bradbury (@JuliaBradbury) September 25, 2014
The first person to congratulate Julia on her happy news was her friend, showbiz manager Jonathan Shalit, who Tweeted:
congratulations @JuliaBradbury on being pregnant with 2nd child. On my 1st visit to Downing Street it was JULIA BRADBURY I took as my + 1
- Jonathan Shalit OBE (@jonathanshalit) September 26, 2014
Julia had her first child at the age of 41, two years after she began dating property developer Gerard Cunningham, 55.
But she was concerned she'd never have children after being diagnosed with endometriosis, a painful condition affecting the womb.
There were further problems when she was diagnosed with pre-eclampsia, which is characterised by high blood pressure and can be dangerous to both mum and baby.
Zephyr finally arrived after Julia was induced, an experience she described as 'traumatic towards the end'.
Julia said last year: "I would love Zeph to have a brother or sister but I am 43 and have to be realistic."
Congratulations Julia and Gerard!