Casual Friday attire at Britex Fabrics means Liberty of London bow ties and gingham shirts. Avery is wearing a dashing clip-on bow tie made of Liberty of London cotton printed with prideful prancing unicorns, hearts, lions and rainbows! And in case you want to make your own, here are easy-peasy clip-on bow tie instructions. Britex Fabrics carries a wide range of Liberty of London fabric on the 2nd floor of their San Francisco store, and clip-on bow tie findings on the 3rd floor. Sadly, this particular classic print is no longer available.