I have no idea... I had a couple Robin issues growing up and never got the memo that Dick was no longer Robin!! lol Like... by now I am more than aware of all the Robin's and where those characters went after being Robin... but growing up I always thought Dick was Robin, never realizing that the books I had were following Tim Drake (in his green/red suit before the full red and black suit) and that Dick was now this Nightwing character I kept seeing advertisements for in my comics.
So I dunno honestly I know the back stories more but I have no idea about the body types... I just thought MAYBE he had a slightly different suit.
Never been a fan of Robin's original costume. The bright colors were bad enough, but the underwear? Really? I think it works for females, like Carrie wore, but the underwear should just go all together. Stephanie looks awesome here, I like the dark mood you've given everyone here. Personally, I like Drake's suit best for Robin. Awesome Job!