children’s book, full page color illustrations, renaissance time period, cover shows seven sisters in a cemetery. seven sisters lost their parents so they have to make their own way in the world; decide to cut their hair and pretend to be men so they can learn trades, tailor, astronomer, etc.
The plot rang a bell and after a search, I found the book I was thinking of THE FOUR GALLANT SISTERS adapted from the Brothers Grimm by Eric A. Kimmel ; illustrated by Tatyana Yuditskaya. The notes say it was a combination of two of the Grimms’ tales but the summaries of the book don’t list which stories. I know you remembered seven sisters, but it might be worth checking this book (you can see a picture of the cover online) and maybe the book you’re thinking of is from one of those original Grimm stories.