eBay
Beautiful Sevillana dress bought from recommended boutique in Madrid. Bought for £50. Says age 6 years but i would say it would fit age 6-8 easily. It is white with red spots and beautiful  trims to give the stunning Spanish effect. It has a small net around the bottom layer of the dress underneath.
This is a stunning item that the Spanish children actually wear for their traditional dancing. It says Polyester but it feels almost like cotton. It is well made and in immaculate condition. 
I bought this a year ago for my 7 year old. She tried it on but we haven't had the opportunity to wear them. 
I also have one for age 5 as I bought one for each of my daughters on a trip to spain. (see my other listings). 

Would make a perfect item for Spanish fancy dress or as an original Sevillana or flamenco costume. 

Please see my other items and please feel free to ask any questions. Thank you.