Wife revealing her tits to strangers

My wife is the shy type but she has a fantastic body, especially her tits. My fantasy is for her to show herself off to tease other guys. She is due to go away for the week next month so I set my perverted mind to the test and have came up with a cunning plan. I have made an adjustment to her swimming costume, I've made some small un noticable cuts to one of the straps that tie around her neck. I've now got fingers crossed that when she is messing about in the pool the strap will snap and hopefully some lucky guys will get to see her tits. Fingers crossed it works :)