Dear community

My mom loves this dress i bought in Thailands some years ago. Especially in this heat since the fabric is very light. Google reverse Image search shows me "Kaftan" but I think thats not 100% what she wants. I would like to surprise her with a new dress for her Birthday, please help me find something similar to this in Europe. Also anyone know what the fabric could be (there is no hint Inside the dress, just a washed out label). She would Love to have a similar dress in Dark blue/Navy blue... Or maybe even red or Dark green (she likes strong colors and the only thing she doesnt Like on this original dress is that its Black and she only has one and not many :D haha....)

Hope someone can help me... I am completely clueless :(

Also sorry for my english, its not my native language. Hope someone can help.