HELP....This Nana..looking for IDEA's for a PLUS size Fairy Costume

Hello,
I am a Nana who is hoping to join my two Adorable Young Granddaughters... They will be Princess FAIRY/Pixy's this year for Halloween. I am in hopes SOMEONE can give me ANY suggestions on Creating a CUTE Colorful Costume This Nana can put together for herself.
Any and All Ideas and or Comments will be A HUGE help!

Looking forward to hearing from YOU!

Thanks,
"Happy HOLLO~WEEN"