Laura, Nicola and Alison Crimmins, 29, live with each other in Dublin, Ireland and mirror every aspect of each other's lives, from diet and beauty to exercise.
As a result, the trio boast a waist size of 28inches, a 34A bra size and weigh bang in on 8.5stone for their matching 5ft 11in frames.
Laura, who is in a long-term relationship, explains: "We live identical lives so we look the same and we love it!
"We use exactly the same products and get all our beauty treatments together whether that's spray tanning, nails, make-up or our haircuts.
"We all book ourselves in for an appointment with our hairdresser Kathy at the same time so our locks look identical.
Allison, who is single, adds: "It's important for our job as triplet models that we look exactly alike so we eat the same diet and exercise together too.
Nicola, who is single, explains: "We're so close. We have a 'Sisters Whatsapp' so we are always in constant contact with each other all the time and buy the same things.
The Crimmins triplets regularly feature on world's sexiest sisters list and have thousands of fans.