The above purikura is from shopstaff/model Arishan's blog. Here's another yukata one:
And a general summer one with her boyfriend:
I love the black and white yukata here. From reader-model Mimore Fukuoka's blog.
Here's one using Rumor's new angle. Model Minami's blog here.
Cute one from a Vivi model, 'Liz'.
Girls wear yukata much more often than guys do but there's still quite a lot who get into it, like Men's Egg model Takazumi Hikichi...
Here's Nemoyayo from last year with the Bambi-Na summer frame:
and a general "summe" one with Manya.
Some girls are brave and wear their bikini's for purikura! Like this Jelly model, Nonpocha:
Or the Egg girls, Yumachi, Aina, Anna, and others:
A lot of the bikini purikura I saw seemed to be taken at Summerland, a pool resort/theme park. It specifically says on their blog that you can wear swimwear to take purikura. I guess in a regular game centre you'd just have to whip off your top layer once you are inside the booth!
And finally a few of my own (not bikini ones you'll be relieved to hear!)
And one I took yesterday, blue and white stripes feel summery to me...deckchairs maybe??