Rt42

[chokkie]

would love some help with this one, really struggling this week ....
3d actress with song that upsets Queen, innit! (8,7) ?a???i?e ?u?n?i?

11a publicly exposes bazaar to crtaftily defeat (8) ????m???
13d waspish old theatre holds three to fifty-one (9) ?i?r?????
4d resetting problem cut by boorish writer (8,5) ?e???u?e ?t???

Many thanks, Chox.

[Lie-in King]

3d Caroline Quentin - 'carol' (song) + anag 'Queen innit'
11a Outs-mart
13d Vitriolic - '(Old) Vic' (holds) 'trio' + 'LI' (51, Roman)
4d Gertrude Stein - 'rude' (boorish, in) anag 'resetting'

[Oldred]

13a vitriolic

[chokkie]

Many thanks, folks. An enormous help. Cheers, Chox.