These photos of Irish sports stars posing with their younger selves are sure to brighten up your day

We've set the flux capacitor to 1.21 jigowatts and brought Irish sports personalities back in time for a photo op with their younger selves

For no reason in particular, other than the fact that it tickled our fancy, we've decided to Photoshop some well known Irish sports stars into images containing a younger version of themselves. The beauty of this little experiment is that it is essentially a study of the development of certain fashion trends for given eras in Ireland. Here's a handy little trick for figuring out what era a given photo is from. The more voluminous the perm and the closer you are to the 80s. The other startling revelation the vast majority of even the baldest of athletes had hair sprouting from their scalp at some stage. You'll notice that Father time has been kind to some but mercilessly cruel to others. Enjoy!

Damien Duff: 2012 vs 1998

Donncha O'Callaghan: 2015 vs 1999

Roy Keane: 2015 vs 1997

Peter Stringer: 2015 vs 1999

Andy Lee: 2014 vs 2004

Rory McIlroy: 2014 vs 1999

Cathal Pendred: 2014 vs 2009

Ruby Walsh: 2015 vs 1997

Barry McGuigan: 2014 vs 1985