#2. Garnet (Final Fantasy IX)
Here's how she should look. Now brace yourselves...
We're not having a go at larger people here, but, but, just... Wrong! The trick to successful cosplay is deciding on a character who suits you well enough that you're halfway there before you start, and then putting in the effort to emulate their look as accurately as you can. Neither of those factors are present in this pic. It may be a small and seemingly insignificant detail, but Garnet wears a layer over her bra, fuggodsake.