Easter is a good time to plan a spring and summer wardrobe. Traditionally on Easter Sunday a new dress or suit is worn to symbolize new life in Christ. By keeping these outfits simple, you'll have something to wear to church all through the summer.
Here's a free tutorial for an adorable dress made from an adult button down shirt.
http://www.dana-made-it.com/2009/04/summer-fun-shirt-dress-tutorial.html
Here's another shirt refashion by Bethany at Vermillion Rules!
http://vermillionrules.blogspot.com/2009/04/another-easter-dress.html
Transform a basic dress with this flower collar tutorial from Katie Did.
http://katiedid.squarespace.com/katie-did-journal/2009/5/1/tutorial-flower-collar.html
I love this reversible dress from Viola and Pearl.
http://violapearl.blogspot.com/2009/07/elusive-and-reversible-easter-dress.html
The pattern isn't included, but it looks like a variation of a pillow case dress with a button hole in the center back for the shoulder straps to pull through and tie. This would be adorable with a shirt underneat in colder times.
Here's an adorable dress from Life In The Empty Nest made from a pair of sleeves and a collar!
She has a lot of fun upcycle posts you should definitely check out.
http://theemptynestlife.blogspot.com/2009/04/upcycle-project-1.html