Small Dog clothes for Large Dogs?

I'm really dissapointed that the hoodies, pajamas, etc are only for small dogs. I have a great dane/pitbull mix and he wears pajamas all the time in real life. I'd really like to see a conversion of the small dog clothing for the big guys, specifically the pajamas, the hoodies (partial and the full one with the ears), and the dinosaur pajama thing. 

Is this possible?