Wie captioned it thusly: "When that @niketraining HIIT workout just kills you... #snapchatvibes #Mondays"
It wasn't long before Michelle's buddy Danielle Kang chimed in with a comment about Wie's boobs: "Hahahahaha A cup looking like a B cup here 😂😂😂 what a wonder bra @themichellewie"
Leading Michelle to fire back: "@daniellekang omg I hate you...I am a B CUP! You are an A CUP!!! Your face is an A CUP"
Don't ever change, ladies, don't ever change.