This is the line of realistic wearable muscle suits available from Flex Design Costumes. They come in a wide range of musculature and colors (over 24, including neon pink, light blue, and gold) and range from $750 - $3,500. I feel like this one's nipples are staring down at the crotch trying to figure out what happened to their friend Mr. Penis. They're also releasing a line that have superhero costumes covering the muscles, and there's an example of Deadpool after the jump. It's the perfect way to make sure you stand out from the crowd of the nearly thousand other scrawny and dad-bodied Deadpools at Dragon-Con next year, so that's something.
Keep going for a bunch more examples, including Deadpool.
Thanks to Landon P, who needs a muscle suit that makes him look LESS muscular. Okay now those are called fat suits.