Irvine Welsh - (2015) - The Sex Lives Of Siamese Twins (fiction)

From the number one bestselling author of Trainspotting
Meet Lucy Brennan - an aggressive personal trainer who has just become a media hero after taking down a would-be gunman in Miami.
The one witness to the daring rescue is Lena Sorensen - an overweight depressive who is becoming increasingly obsessed with Lucy...
Irvine Welsh's latest creation captures the two great obsessions of our time - how we look and where we live - and tells a story so subversive and dark it blacks out the Florida sun.