Many sites these days are saying thongs are declining and granny pants are back in.
These sites argue for thongs.
http://www.thedebrief.co.uk/style/fashion/in-defence-of-wearing-thongs-all-day-every-day-20150644189
http://metro.co.uk/2015/06/18/thongs-are-not-over-a-defence-of-thongs-5221388/
http://www.manrepeller.com/2014/10/in-defense-of-thongs.html
These sites argue for thongs.
http://www.thedebrief.co.uk/style/fashion/in-defence-of-wearing-thongs-all-day-every-day-20150644189
http://metro.co.uk/2015/06/18/thongs-are-not-over-a-defence-of-thongs-5221388/
http://www.manrepeller.com/2014/10/in-defense-of-thongs.html