Made by Rae has a free pattern for a Buttercup Bag. It's just the cutest little thing. I only spent about an hour on it from start to finish, and I'm no pro-sewer! The fabrics are from the Charisma line by Moda. I didn't put the optional buttons on the outside, and I used a polyresin snap (since that's what I had on hand), but I tried to follow the pattern other than that.
Next I want to get Amy Butler's Birdie Sling bag pattern ;)
Edited because I meant to post the link to the Flicker Group where you can see lots more of these bags!