What is a pretty and unique baby girls name?

my wife and i are really struggling. we have a baby boy named landon getting ready to turn one and my wife is 6 months prego with a girl. we are having the hardest time thinking of a name we like. Its our last kid and its a girl so its got to be pretty, beautiful, and very unique. we are a young couple 25 and 26. please help. also the middle name is Rosina after my grandmother that ped recently. so it has to go with Rosina. Thank you all so very much.