Looks like I'm the only one having a brain dead day. Help please!
17a Given a coat that's part décolleté, unusually. (13) ----t-t-l-t-d
21a Greek character has a dance (7) ------a
26a Old cross captivating city is a gem (4) No letters I'm afraid
3d Once brave loner set out, he was lost forever (14) n-n-e-o-----l-
15d Each moth struggles with year of divine battle (9) t-----c--