1 In shape, like Rubik's enigmatic toy. (5)
5 Sell it to deceive an opponent or buy it to comfort a little one. (5)
8 "––, Altar, Hymn" Frank Muir's punning description of a bride's attitude to her betrothed. (5)
9 Leonardo da Vinci's Last Supper, for example. (5)
10 Add ornament or fictitious detail to. (9)
11 Mineral spring. (3)
12 Lingerie (familiarly). (5-6)
15 A bra mess? - Red! (anagram) (11)
19 Litte devil (needs a dose of petticoat discipline perhaps). (3)
20 Mortify (as Nanny might, to a naughty boy!) (9)
22 Monetary unit of India. (5)
23 Star Trek, for example. (3-2)
24 Do it to kill - you could turn heads. (5)
25 Town in N.E. France. (5)

DOWN

1 Lingerie chic! Am I so lewd to show it? (8)
2 Writing desk. (6)
3&7 Could be 365 or 366 days. (8, 4)
4 Line of equal pressure on a weather map. (6)
5 Short protest march. (4)
6 Make hackles rise. (6)
13 Wild uncontrollable excitement or emotion (8)
14 Two might be comfy with housecoat  - and one might warm a bottom! (8)
16 "If the law supposes that," said Mr. ––…, "the law is a ass - a idiot." Oliver Twist - Charles Dickens. (6)
17 Slow movement. (6)
18 An American baby's nappy. (6)
20 Christopher Robin's dressing gown had one. (4)
21 Miss MacDonald's word for a girl, perhaps. (4)

Nobody picked Marlene Dietrich in the Film Star Competition, so let's see how you all go with this one: