And speaking about their relationship, Dec said recently: "I think we've always been attracted to each other, but it has always been that thing of we work together. We always hung out."When she was single and I was single we'd go out for dinner on Valentine's night together because we didn't have partners.
This year we went out as a couple."However, he also made it clear that he was in no rush to walk down the aisle."We'll see," he said."My mam doesn't give me any hassle.
So why not pop down to their Fulham shop to take a closer peek at Ali's gown?
Or get that old school Hepburn-esque glamour on your big day with our top lookalikes in our edit below.
The star, who won the award for Best Entertainment Performance with sidekick Ant Mc Partlin, couldn't take his eyes off girlfriend Ali Astall, who looked stunning in a printed dress.
The pair looked head over heels for one another as they enjoyed their meal inside the venue, intently looking into each other's eyes and chatting away.
And while Ant and his wife Lisa Armstrong were sat next to them, the couple looked as though they only had eyes for each other.
Dec is believed to have started dating Ali, who managed both Ant and Dec's careers for over a decade, early last year but only went public in October 2013.
The church in Newcastle's tough inner city ward of Elswick is where Donnelly's family worshipped when he was growing up and was the venue for the funeral of his father Alphonsus in 2011.
Stunning in its simplicity, this gown features a classic boat neck, nipped-in waist and elegant pleated skirt.
We'd expect nothing less from the Chelsea-based designer who has also styled exquisite gowns for Geri Halliwell and Guy Ritchie's wife Jaqui Ainsley.
We never need an excuse to buy a new pair of shoes, but these really are the perfect party season shoes.
A source recently told The Sun newspaper of the romance: 'They've adored each other for years and people have often thought they were together - but it's only recently they finally became an item.