onverting a buttondown to a polo shirt

[Taholmes160]

hi all
im working on converting one of the presupplied buttondown shirts to a plo. its all working well, except I cant figure out how to eliminate the overlap down the front of the shirt where the buttons used to be. there must be a blender command to join the 2 edges of the same mesh together, can someone please help me out?
tim

[RobBaer]

Don't know about edges for sure, but in edit mode you could use MERGE [t panel, tool tab near bottom] to merge selected vertices.