This afternoon, Sir Keir Starmer addressed the nation from Downing Street for the first time after officially becoming Prime Minister.

The Labour leader sealed a historic landslide victory, forcing former Conservative Prime Minister Rishi Sunak to resign. Joined by his wife Lady Victoria and surrounded by friends and colleagues, he spoke to the nation.

Lady Victoria was seen looking glowing in a bold and vibrant Labour red dress, with fans taking Twitter to find out exactly where the glamorous outfit was from. One Tweet read: "I haven’t seen Lady Victoria Starmer before. She seems to like red. Do you have any info on this dress she wore at lunchtime as it was really lovely."

A second tweet read: "Great choice of dress today Lady Starmer." After doing some digging, we can now confirm that the dress is from luxury British designer brand ME+EM, and it's priced at £275.

At the time of writing, the dress is currently available in sizes 6, 8, 10, 16 and 18. According to the website, there are a 'few' sizes 12 and 14 left.

The dress could be perfect for an upcoming special occasion, paired with some delicate cream heels like this £33 pair from New Look. On the ME+EM website, the full product description reads: "Granting it AM-PM polish, this midi dress is made from a crease-resistant, machine-washable fabric and is detailed with cut-outs at the shoulder."

It comes in a 'luxury fabric' with functional pockets and an adjustable neckline to suit your style. The elasticated waistband ensures a comfortable, flattering fit.