On their way, Leinster had exited a 'pool of death' and also beat Leicester Tigers and Toulouse, two of the greatest clubs in the history of European club rugby, in the knockout stages.
This Saturday afternoon fans will get the chance to meet one of the main men behind this historic triumph. Leinster legend Leo Cullen.
Leo will be signing copies of his gripping new book, 'A Captain's Story', at Hughes & Hughes Bookshop in St. Stephen's Green Shopping Centre from 2pm.
Do you want to add a drop of genuine blue magic to the Christmas stockings of the Leinster fan in your life? Come along on Saturday and the Hughes & Hughes staff will help you do just that!
If you cannot be there on the day just give them a call on tel: (01) 4783060, email them at firstname.lastname@example.org or leave a message on their Facebook page and they will be glad to reserve signed copies for you.