When deciding on photo outfits for guys, a few things to consider are budget, personal style and options already available. If finances aren't an issue then heading to a gent's favorite store will get you all stocked up (Note: A good sales person is worth their weight in gold. Look for those who are knowledgeable and seem to have a gift for styling). The more budget conscience need only remember there is most likely a bedroom full of options, some just may need to find their way to the laundry.
Keeping with the personal style is very important. Dressing a jeans kinda guy up in slacks will always be impressive; however, keeping those major diversions to a minimum is essential. Senior photos are a representation of the graduate today, not the professional adult to be. With that said, keep the following in mind:
You already take selfies with your friends so why not enjoy your senior portraits instead of dreading them.