Wear the Adult Celtic Costume and get ready to crack open the Book of Kells ! You’ll be speaking Gaeilge in no time when you wear this Celtic costume. This velvet Celtic dress is short enough to keep you looking modern, with an attached hood to maintain that medieval modesty. Give your Halloween celebrations a Gaelic twist in this Celtic dress. See Size Chart Availability: This Adult Celtic Costume takes approximately 1-2 business days to leave the warehouse plus transit time.