be over the moon

US /bi ˈoʊvər ðə muːn/
UK /bi ˈoʊvər ðə muːn/
"be over the moon" picture
1.

estar radiante, estar nas nuvens, estar felicíssimo

to be extremely happy or delighted about something

:
She was over the moon when she heard the news of her promotion.
Ela ficou radiante quando soube da notícia de sua promoção.
The kids will be over the moon if we take them to Disneyland.
As crianças ficarão radiantes se as levarmos à Disneylândia.