Favorite? I'll do better than that and saved it on my cpu so i'll never lose it. (and watch it again and again)
You seem to have made them a littlle more bigger than in the sketch and that seem just perfect. Their fun and big enought but not too ridiculously big. I think they should stay about this size, not bigger or smaller. (Unless for temporary story usage)
I also like the effect you made with the bra who seem way too small for her. It emphase the impression that she recently grew up a lot and she wasn't prepare with that. (And is trying to deal with it has much as she is capable off.)
The rest of the body proportion are also pretty fine and well drawn too in my opinion. Thought i liked her when her glasses were just a bit more smaller and rectangle instead of round. (Or maybe it's the angle that do that?) carlos-the-g.deviantart.com/ar…
Giselle showing off her true succubus form gives even more reason to snuggle against her... as if being adorable, lovable, and sexy wasn't enough... now she's busty too. =^_^= <3 <3 <3 I always love your art style, especially when you draw Giselle.