The United Service Magazine, Vol. 96, pg 438
A Yankee Army Wedding
Miss Sarah Beesely, one of the daughters of the Rhode Island Regiment, became the wife of Mr. Charles Tibbets, private in the same Corps. The bride was dressed in Bloomer costume, with blue pants, cherry coloured blouse, and white felt hat, with white plume, making up the national colours--red, white, and blue.
Sounds like a cute little outfit.