Can you wear a black dress on a church wedding?

Kim • engrkikay ❤️
I will be attending a wedding of my friend next week and i bought this dress. But my boyfriend said i should not wear black because it looks like i'm mourning. Is a black dress really inappropiate for a church wedding? Should i ditch this dress and buy a new one? Thanks in advance for the comments ladies! ❤️❤️❤️