Who is the REAL AK Girl? Who is the REAL XF Girl?

This is a Halloween Art Contest Entry for polycomical 

AK and XF decided to dress up like each other for Halloween this years but unfortunately each other costume are too big or too small to fit in... so in order to fit in their costume, they have to eat their Weaknesses food that effect them: Chocolate Caramel Bar to inflate AK Girl & Strawberry Frost Yogurt to deflate XF Girl. They both fit in their costume and fix up their hair style too but unfortunately AK Girl forgot about her inflation part because when she inflation, her breast inflated too... so that a draw back but it fine... let hope their have enough Weaknesses foods to eat to keep them in character and there will be no enemy attacking the city anytime soon?