Already at the age of 4 Hass designed her first dress, a light-blue princess dress.
Eventually she studied design in Malmö Fashion College, and before she was done with the training she had already received her first job as a designer.
Hass worked with some Swedish brands before she went to Hong Kong, to try her "wings" as a Design and Marketing manager.
The employment also included designing and developing collections for the international market.
Many experiences and contacts later she returned and founded her own collection.
YH was also featured in a spread from CHIC Magazine featuring YH Leaf Bomber and Leaf Mini Skirt worn by model Elsa Hosk in cat on a hot tin roof article. And, in November the same Victoria's Secret Angel model wore YH clothing in the magazine.
YH clothing has been seen on television. A YH Leaf Bomber Jacket was worn by Josefin Myrberg on Idol October 10, 2014 (http://www.tv4.se/idol/klipp/josefine-myrberg-holding-out-for-a-hero-2986545).%5B%5D
Further, beautiful Valeria Mangani attends the Fox International Channels Party at Villa Aurelia in Rome, Italy wearing YH leather jacket in powder puff.