Little trick that keeps the bikini armor form losing away
Here's a key hole at the bottom,Jean hide the key somewhere in her office.

琴对她的比基尼铠甲做了一点小手脚，以防止它在战斗中丢失。
下面有一个钥匙孔，但琴把钥匙藏在团长办公室的某个地方了。