Premature baby clothes at Woolworths

I am a father to a premature baby girl and have struggled to find a decent variety of premature clothes for her. I have been to four different stores around Johannesburg and still no joy. I was under the impression that woolies catered for everyone and wanted my baby girl to look gorgeous in her woolies attires. But i have had to settle for clothes that are too big for her. I am extremely disappointed at the lack of service or lack of clothing there of.