I guess there aren’t a whole lot of characters in the Portal games to actually dress up as, hence why this group of friends was forced to repeat Chell twice, and have one of them literally dress up as the famed nonexistent cake. Wheatley is feeling the burn that you’d rather dress up as cake than him.
Fully-clothed Chell is Amiko, and she’s got a hell of a lot of other great cosplay under her belt include a wicked scary Little Sister costume from BioShock, which you can check out here. And cake girl makes a hell of a Lady Thor.
Alright, enough joking around Valve. I officially stop caring about Half-Life 3, but you better give us a Portal 3 at some point.