The dress in question is the £460 red sparkly Needle & Thread dress ($719 if you're reading this in the states) she wore at a reception for heads of State and Government at Buckingham Palace in ...

The mom-of-three wore a Needle & Thread ‘Aurora Ballerina’ dress in a Christmassy red color, which was covered in sequins, and also featured long mesh sleeves and ruffle detailing on the neck ...