Check out Anthropologie.

Thanks...unfortunately, not on Anthropologie's website.

I'm pretty sure that fabric is from an older PB Teen fabric -my daughter had a duvet, but hers was in a kind of lilacy color, with turquoisy outline around the flowers. The stripe was on the other side. Came in quite a few color ways. You might try PB hibiscus on ebay....

Here's the set my daughter had. Does it look the same to you? Just a different colorway?

Here is a link that might be useful: Ebay

I think that is similar but different. The one posted by the OP has a hibiscus in it that I don't see in the PB one. The ruffle makes me suspect it was a custom job -- at least the addition of the ruffle.

Bestyears - you're right - PBTeen Wahine:

http://www.ebay.com/itm/POTTERY-BARN-WAHINE-DUVET-COVER-F-Q-2-STANDARD-PINK-/360440253828#ht_500wt_922

lascatx - I think you may be right that it was a custom job as I can't find any shower curtain for the PB Wahine line.

Now I know...so thanks!

I think it was probably custom made using the duvet cover as fabric yardage.