on cloud nine

be on cloud nine (to be very happy ) — быть на седьмом небе

Example: For a few days after I heard I'd got the job, I was on cloud nine.

also:
be in seventh heaven

Example: Since they got married they've been in seventh heaven.

be оver the moon
if you are over the moon or on cloud nine, you are both happy and excited.

Related vocabulary:
[in seventh heaven]
[over the moon]
[on top of the world]
[jump for joy]
[pleased as punch]
[thrilled to bits]
[walk on air]