1. over the moon
She was over the moon about/with her new bike.
She's over the moon about her new job. "I bet she was pleased with her results." "She was over the moon."
2. on cloud nine
アメリカ英語 "という言葉w siódmym niebie"(on cloud nine)集合で発生します。
Idioms [Solutions Gold 3]3. be on cloud nine