OCBD fit/length

Hey guys, sadly I was too late on the Fit Check thread and I need some quick advice so sorry for the extra fit check post, but I was looking for the fit and length of this OCBD.

http://i.imgur.com/bEUO9Zc.jpg?1

Sorry for the shitty picture but I've no one to be my personal photographer atm. I want to wear it untucked to a party tonight but I'm afraid it looks a bit too long for that occasion. I think it fits well personally (It's XS Slim Fit from Uniqlo) but I'm always doubtful about my own fit checks.

Thanks guys!