It doesn't take much to impress the folks at the Guinness Book of World Records, I guess. They deemed the gathering of 80 cosplayers, each dressed up as a video game character, "The Largest Gathering of Games Characters" that they've ever had on record. The GameSpot report on the matter points out that the record wasn't officially recorded prior to the event, so it wasn't exactly hard.
That certainly doesn't mean that the 30 kids sporting Mario outfits from Argyle Primary School, Kings Cross aren't adorable. We're just expecting the record to be smashed by the weekend. There's surely a con happening somewhere.
UK cosplayers set Guinness World Record [GameSpot]