Today show colleagues Peter Stefanovic and Sylvia Jeffreys are engaged.

The handsome journalist and author, who is the brother of Today show host Karl Stefanovic, got down on one knee and proposed to the 30-year-old blonde beauty two weeks ago, during the couple's romantic trip to Europe.

Peter posted the happy news on Instagram on Monday morning, along with a snap of the pair standing in vineyard in France and Sylvia showing off her stunning diamond engagement ring.

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Engaged! Today show colleagues Peter Stafanovic and Sylvia Jeffreys are engaged

‘Asked my missus to be my wife and she said yes,’ he gushed in the caption.

Meanwhile, Sylvia wrote: 'How's this for a framer?! A couple of weeks ago Pete popped the question, and I said yes, OF COURSE!!!

‘We've had the most wonderful time celebrating with great mates. We couldn't be happier (check the grins) and so excited to share the news with everyone.’

'We couldn't be happier': Theyposted the happy news on Instagram, along with snaps of the pair standing in what appeared to be the grounds of a castle and Sylvia showing off her stunning diamond engagement ring

Meanwhile, the couple's Today show colleagues couldn’t contain their excitement at the news, with Karl joking during the show on Monday morning: 'He, according to Sylvia, got to one knee a couple of weeks ago … she said yes, after she fainted.'

'A big hearty congratulations and all our love from here at the show,' he added.

Moments later, Sylvia appeared on the show via a phone-in where she opened up about the momentous occasion.

‘After a day in a town called Saint-Émilion, we ended up in some vineyards, having drunk so much wine,’ she explained. ‘He tricked me into taking some photographs and then I turned around and there he was, on one knee.

‘He popped the question with a big gold grin on his face and there you go. So we are getting hitched. Happy days!’

Lovebirds: Peter and Sylvia began dating at the end of 2013 after co-hosting the weekend edition of the Today Show, when they stepped in in for the regular hosts over the summer

‘He completely caught me off guard,’ she added. ‘So it was a beautiful surprise and we have had a beautiful couple of weeks over here celebrating with our great mates who are with us. We can't wait to get home and celebrate with you guys too.’

Meanwhile Karl joked that Sylvia 'could have done a whole lot better' after she announced her engagement to his brother Peter.

The Today host mused over whether the journalist was having second thoughts.

'Is she sure? She could have done a whole lot better. Is she sure?' Karl joked.

Happy news: Moments later, Sylvia appeared on the show via a phone-in where she opened up about the momentous occasion

Joking around: Karl joked that Sylvia 'could have done a whole lot better' after she announced her engagement to his brother Peter

He also lamented that he was not aware his brother was about to get down on one knee.

Sylvia said: 'Can You believe he did it all by himself. I don't think Karl, you didn't know, did you? You hadn't even seen it. If he hasn't shown Karl, then he hasn't shown anyone, surely.'

To which Karl replied: 'I didn't even know. It's like why wouldn't you tell me? It's like why wouldn't you tell me? I wouldn't tell anyone.'

And after Sylvia pointed out that Peter wouldn't come to the phone because he was watching football, Karl joked: 'Welcome to the Stefanovic clan.'

Presenter Richard Wilkins also chimed in and asked whether having Karl as a brother-in-law made her think twice.

Overcome: Meanwhile co-host Lisa fought back tears as she paid an emotional tribute to her newly-engaged colleague on live TV

'Well, I have had a bit of time to come to terms with that, haven't I,' Sylvia replied.

Meanwhile co-host Lisa fought back tears as she paid an emotional tribute to her newly-engaged colleague on live TV.

The 56-year-old called Sylvia an 'extraordinary woman' shortly after she announced the proposal.

Lisa was overcome with feelings of joy and declared the couple were 'meant to be together' as Sylvia spoke to the Today panel.

Getting candid: Last month, Sylvia opened up about their relationship for the first time in a new interview with Show and Tell

When Lisa heard her younger protégé's good news, she was almost reduced to tears - and also gave some useful marriage advice.

'I'll tell you why everyone's so excited Sylvia,' Lisa began. 'You are an extraordinary woman and Pete is an absolutely beautiful man.

'And from the very first moment that people started hearing that you two were an item, everyone just said, "Of course".

'You guys are absolutely meant to be together and we're just... we couldn't be happier. I've got tears in my eyes, I'm so excited for you.'

Long distance love: Sylvia and Peter spent the beginning of their union in a long distance relationship with Peter heading overseas as a foreign correspondent for the Nine Network

Romantic gesture! The Today Show host also revealed that during Peter's time overseas, he sent her handwritten letters. Pictured with Peter's brother and Today Show host Karl Stefanovic

Sylvia then suggested she might need a few tips on married life from Lisa, who is the wife of journalist Peter FitzSimons.

She specifically asked what to do when her partner is busy watching football and Lisa replied: 'That's when you and I go out for the night!

'We just leave them to the football, Sylvia,' she added. 'I've got another footy widow, mate.'

Peter and Sylvia began dating at the end of 2013 after co-hosting the weekend edition of the Today show, when they stepped in in for the regular hosts over the summer.

They spent the beginning of their union in a long distance relationship with Peter heading overseas as a foreign correspondent for the Nine Network.

Soon to be in-laws: Sylvia and Karl, who are close work colleagues, will also be in-laws very soon

Last month, Sylvia opened up about their relationship for the first time in a new interview with Show and Tell.

Speaking with friend Monti Diamond, the journalist admitted the private couple usually 'get a bit weird talking about our relationship' but Peter had given his blessing to open up.

'My sister and my mum both sat me down after that stint on-air with Pete and said "Is there something going on? Cos we can kind of pick up on something",' Sylvia said when asked about the immediate chemistry between the pair.

'There hadn't been anything [romantic], at that point.'

Today show family: The Today show family just got a little closer with the news of Peter and Sylvia's engagement

The Today show host also revealed that during Peter's time overseas, he sent her handwritten letters.

'[The first letter] was just nice things, about having a nice time working together, wishing me well and whatnot,' she said about the romantic gesture.