French sayings

Across

5. a la ___
7. cul ___
9. a private conversation
10. ___ bleu
12. an important sporting event with a very large prize
13. at once
15. ___ d'état
16. C'est la ___

Down

1. an embarrassing remark or act in a social situation
2. ___ de la crème
3. an indescribable quality
4. café au ___
6. double ___
8. ___ appétit
11. au ___
14. ___vu