We've been asked quite a few times where we purchased our knicker elastic. In Melbourne you can't go past Cleggs for notions, they carry a great range.
We used 9mm knicker elastic and Cleggs have two types in stock. The first is from Birch, it's slightly thicker and comes in natural, black or white. The second, called Stretch Ribbon Elastic, is slightly thinner and has worked well in combination with the Liberty print florals we used for our samples (Cleggs also stock Liberty). Its available in five colours including pale pink and blue but the one I use most often is a very pale butter colour. Neither of these elastics are available from the on-line store but Cleggs will happily take a phone order, call 03 9654 7677 and select haberdashery from the options available.
For a step-by-step guide showing HOW TO attach knicker elastic click here.
Special thanks to Tina for all your help!