Christmas Cryptic

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Across
  1. 3. Santa's favourite (7)
  2. 6. Monarchs after inventory of chaps (9)
  3. 7. Drunk snake gives gifts (7)
  4. 12. Holiday hit: I'll wish romantic's faulty (3,1,4,3,9,2,3)
  5. 14. Outcast happily takes the start of Christmas (6)
  6. 15. A mix of leaves drop in Autumn for fairies (5)
  7. 17. Incorrect coordinates due to embellishments (11)
  8. 21. Mike Tyson's favourite chocalatier makes a bouquet (6)
  9. 22. Gift at the start of Autumn (4)
  10. 23. Christmas dinner where St Nicholas is from (6)
  11. 24. Sweet loaf taken illegally? (7)
  12. 25. Celebrity sits arrested oddly (4)
Down
  1. 1. Ball-breaker (10)
  2. 2. Add three grams to a beverage (6)
  3. 4. Secrecy agreement with a relevant CD mix is in the build-up (6,8)
  4. 5. Broadcast announces airstrike on foot of plant (9)
  5. 7. Clumsily patent a christmas pudding (9)
  6. 8. To be honest it smells good (12)
  7. 9. Gifted rhymer drops drug carelessly (5)
  8. 10. Killer whiskey with Christmassy tones (6,5)
  9. 11. Christmas rock star (4)
  10. 13. Treat specimen incorrectly with iodine (9)
  11. 16. Good king who likes his pizza (9)
  12. 18. Go insane after trunk of trees (9)
  13. 19. Inside there's no way of precipitation (4)
  14. 20. An own-goal score ruined the Christmas spirit (7)