I used our Ramone viscose & linen mix fabric. This has a lovely textured finish but doesn't have the crease issues of pure linen. The drape and weight are just perfect for this type of garment. The pattern was a freebie (very awesome) from love Sewing Magazine issue 19.
If you fancy a go at making your our kimono try one of these beautiful linen and viscose mix prints...
Ramone Linen & Viscose
Charbury Linen & Viscose
Bloom Linen & Viscose
Or if you're looking for something with a modern touch..
Kendal Linen & Viscose