Is this for her or me?

So my birthday is coming up. My wife always gets me the coolest gifts, hands down, from concert tickets to smartphones. She even got me a car once to commute to my train station and back which I still have. Anyway, she said wanted to do something way out of the norm this time. She was very hesitant to suggest it, but anyway here goes. She wants to find a woman, in a certain business(wink wink) that looks just like her, height, weight, hair, etc. and have her over for an all-night threesome. They would wear the same make-up, dress and every underneath of course. My wife is 5,3, red hair, about 115 lbs. She's absolutely stunning. To think I could have my way with two of her for a whole night, is every married man's wet dream. I'm wondering if she's doing this really for me or her. She has the whole thing planned. It is even making her more creative in bed, and my birthday isn't for two months. She is doing all sorts of unmentionable things to me in a kind of louder and crazy way. All she talks about is this birthday present. She is buying two of everything at Victoria Secret. She even bought some toys for them to use on each other...I guess. I am starting to wonder who this is really for, LOL. I'm also nervous. Have any of you ladies ever done something like this for your man?