Is this acceptable?

My friend wants to go Gothic Lolita to an anime convention. Authentic Lolita. I'm currently guiding her to make sure she doesn't get the wrong dress. She's thinking about this OP. I personally think it's just fine, but I would love some second opinions, since I'm still a bit new to Lolita..

Edit: You guys are fast! 0_0 I recommended this for her myself.