1: Beauty stripping top and bottom is an additional feature (3)
2: Mousy girlfriend loses head and bellybutton (5)
3: Clearances for the first couple of characters to find answers. (11)
4: Overcome by disappointment from the rare bonk going awry (11)
5: The time before the first woman (3)
6: One final, huge Greek goddess (3)
7: Record left by teacher in Siam (5)
8: Black arts and demons concerned with Homer's issue? (4,7)
11: Leaving firm when dating (5,6)
13: 27-across about starting off 1-down world unconditionally (2,3,2,4)
14: Seduce husband-to-be in parlor (7, 4)
16: Small piece of fish (3)
17: Bounder beheaded by slippery swimmer (3)
20: Englishman opening a can to dine at home (3,2)
22: Pitch out heartlessly the cards. (5)
24: Three kernels of copper-yellow grain (3)
25: Infection leads from partly uncooked steak (3)