That's an excellent photograph of one of the sexiest women (and best cosplayers) on the planet. Perfectly lit, great contrast bringing out all the colours so richly. Yaya always looks great because she's gorgeous and knows what she's doing, but a good photographer makes the costume look great too, and frames the pose to best effect. You've done both superbly.
I've seen hundreds of photos of Yaya and I don't need excuses to look at her cleavage, she flaunts it at every opportunity (God bless her)! I've certainly never found her breasts disturbing! Hypnotic, maybe... LOL!
I wanted to compliment the photographer, because it's easy to forget the importance of their skill (and the the better the costume and the more attractive the model the easier that can be) until you see a good cosplay spoiled by poor photography.
I don't think having a different figure as a character is a reason not to cosplay them. It's an argument against casting them in a film (in the unlikely event the producers stick to the original look), but in cosplay costume quality is more important. No one's eyes are as big as manga characters', for example, but no one criticises cosplayers for not wearing huge fake eyes. And they're images subject to change anyway. Should busty cosplayers who used to dress as Lara Croft not cosplay her new, reduced cup-size version? Should girls not be "allowed" to do fem versions of male characters, or white kids dress as asian characters, or big girls dress as petite characters and enjoy dressing up as their heroes? Yaya makes great quality costumes and is a great model. I could look at 99% of the rest of the internet if I was just interested in seeing breasts.
It is just my opinion. Could be that she does quality costumes but in my eyes she doesn't fit the figure of Fiona. There are alot costumes very well made but they just don't look like it is supposed to be because the Cosplayer is a bit curvier. That breast thing was just a damn joke because it is definetly the first thing people WILL see.
There are characters that don't look good cosplayed by other races. Because that's just how it is. I am not going to say everything again but Fiora is an athletic TALL and SLIM Character and as you know Yaya is not.
So. MY OPINION is that she should have chosen another god damn LoL Champ which is a bit curvier. For example MF. Because she would have fit to that BETTER.
now go find a fat person dressing as Slenderman, doesn't look as it normally does? Yea, exactly. You can have the best Costume in this world. If you don't really fit in the characteristics that the person features that you are going to cosplay it will not turn out the way it should be
This is no insult to Yaya, she is hot. But no Model.