Congratulations on your new baby!
Here's a few ideas for crib bedding. For the windows, maybe something solid or a small pinstripe (to avoid too much pattern!) The rug already is very bold and colorful.

http://www.spunkysprout.com/pidicrbeset.html

http://www.landofnod.com/family.aspx?c=167&f=3907

http://www.landofnod.com/family.aspx?c=167&f=5043

Good luck!

I immediately thought of Amy Coe, but maybe too busy?

I did a VERY busy room:

http://www.flickr.com/photos/goneil/2627508733/in/set-72157605921662661/

And ended up using green gingham from PBK - I thought it would be too precious, but I ended up loving it.

http://www.potterybarnkids.com/products/gingham-blackout-panel-and-valance/?pkey=bwindow-panels-valances

It looks like the walls are painted the light green color as in the rug, and the chair is the neutral color in the rug. I would look for something in the pink and yellow colors. Toddler bedding fits a crib mattress and has more hot pink colors when you do a search.
Here are a few ideas:
http://www.beyond-bedding.com/pink-orange-butterfly-girl-toddler-bedding-set.html?productid=pink-orange-butterfly-girl-toddler-bedding-set&channelid=FROOG

http://www.tot2teenonline.com/baby-bedding-baby-girl-garden-friends-c-8_15_550/garden-friends-br-baby-girl-bedding-set-p-2736

Let us know what you decided on and post a picture. Good luck and congrats on your little girl.

Thanks,
Christa
hoping to expand our family through adoption. find out more at: www.kevinandchristablog.blogspot.com

I think this Babushka set from Javis Davis looks really cute...
http://tinyurl.com/yd6aak6

But you could always send them that pic and they can help you design something from scratch.

I think bedding, curtains and a throw pillow that match back to different colors in your rug will make the room look so much more finished.
Bedding: i like burnt toast suggestion on http://www.spunkysprout.com/pidicrbeset.html
any brighter pink bedding will be cute
Curtains: they will make the room look more finished, either
a pin stripe containing one of the rug colors, or a solid (nothing too bright though)
Pillow: I suggest a pink throw pillow for the chair to tie back to the rug & bedding (patterned or solid).

PB Kids has a hot pink chamois crib sheet which would be perfect (and SO cozy) for the crib. In my experience, you really don't need the whole crib set, as the bumper shouldn't be used for an infant and it takes forever for them to grow to the age where they keep a blanket on. PB Teen also has some great hot pink pillows for the chair. I'd keep it simple & not try to compete with the rug.

I agree about not needing a whole crib set. If you could find a brighter colored crib sheet (I actually found my son's bright orange one on eBay of all places), and you are at all inclined to sew or know someone who is, you could make a bedskirt and drapes pretty easily/cheaply.

The rug is adorable, and the first thing that came to mind is Anna Maria Horner's Chocolate Lollipop line of fabrics.

Here's an idea- orange or pink would look great!

http://www.garnethill.com/jump.jsp?itemID=7398&itemType=PRODUCT&path=1%2C2%2C2773%2C5857%2C7715&iProductID=7398

Congratulations! I like some of the Denyse Schmidt crib sets with your rug, but those matryoshkas are so, so good, Mary P.!

Some striped curtails with wide striped to match some colors on the rug might work. As others have mentioned a pillow to match in a solid with a texture might work as well.

I LOVE this Esty crafter's customizable crib linens. You can mix and match and she definitely has some patterns vibrant enough for your rug:

http://www.etsy.com/view_listing.php?listing_id=27027515&ref=sr_gallery_3&&ga_search_query=mobile&ga_search_type=handmade&ga_page=5&order=date_desc&includes[]=tags&includes[]=title