There will be an updated post on Lilly-a-Likes when the fall lines are completely out.
When I went to write this post I had a lot of trouble trying to find anything so I'm going to wait a few more weeks to see if anything new comes out. In the meantime, here are some of the best
Lilly-a-Like pieces on sale that would see you through fall:
Plus Size Lilly Pulitzer

From left to right:

Lavender striped popover: I've been reading the September Issues as they've slowly been coming in and I've been seeing a lot of lavender. This popover is only $20(!) and still comes in a wide variety of sizes.

Jacquard sweater // A Lilly-esqe print will keep you dreaming of lazy summer afternoons while raking leaves. Also comes in a few pastel colors which I think you could get away with if you pair them correctly.

Lace dress // I absolutely love the color of this dress and think it'd look good in all seasons. I believe you could replace your little black dress with this Land's End piece.

Printed maxi // I like maxi dresses because they're great for fall weather. The long skirt helps keep the chill off your legs in the mornings and you can shed your sweater as the day gets warmer.

Another printed maxi // Same thing as the maxi dress above, it's just an all-around great pick for fall. I'd really like to pair it with this Old Navy cocoon sweater.

Again, more Lilly-a-Likes on the way as soon as the fall collections hit stores!