Radio Times Prize Crossword 20

[Ancient]

And more help, please:

2d: Opera star to rip off US singer (5,5) ?????,d???a; 3d: Sea snake, one in prison! (7) ?????a?; 19d: Fashion knight for large bank (5) ?o?n?;

8a: Accountant with vigour granted convertible (9) ???r?????; 11a: Fair old place (10) e???s?????.

[scorpiojo]

Prima Donna
C asp I an

[shaneystar2]

19d mound
8a cabriolet
11a exposition

[scorpiojo]

11 Ex position

[Mamyalynne]

2 Prima Donna

3 Caspian

19 Mound

8Cabriolet

11 Exposition

[maurice]

19 mound --- from mould (replacing L with N)

[Ancient]

Thank you all so much!

[elizabethsarah]

Agree 2d - Pri (anagram of rip) and Madonna - Prima Donna. All the rest I had same questions as you but glad you asked as now I have the answers!
I Always seem to get stuck on the last 4 or 5 clues.
Maybe I should change my username to Pooh Bear!