"C" if you can guess me!

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Across
  1. 3. prince
  2. 4. quarter
  3. 5. vanilla
  4. 6. quartz
  5. 7. "Today is ________."
  6. 9. mode of communication
  7. 10. bagel
Down
  1. 1. glass slipper
  2. 2. dog
  3. 3. birthday cake
  4. 5. a buttery pastry
  5. 6. red and white candy
  6. 8. a type of metal
  7. 11. weep