In 1956 Sybil Connolly, the renowned fashion designer from Dublin, came to see Gerd to discuss the weaving of tweeds for her next show. Gerd wanted to develop ‘Irish tweeds with a difference’, knowing that if she could produce the right tweed Sybil Connolly would create an outstanding garment. For Sybil Connolly's January 1956 collection Gerd designed and produced three different weights of tweeds: The Irish Basic, The Emphasize and The Open Weave (later known as the Mended Tweed).
At the fashion show to launch the collection, the unique ‘open weave’ of rough, heavy spun and thin smooth white Irish yarns hit the headlines of several papers.
Anne Scott-James described this open weave in her article for a London paper thus: "Well, here comes the show with a girl in a suit in a completely new tweed. The threads are enormous, the weave as clumsy as bad darning, but the fabric that looks so primitive is cunningly subtle and soft".