I'm going to send her a card and give her my best wishes.

我打算给她寄一张卡片，并给她最美好的祝愿。

youdao

If you should see Celia, give her my best wishes.

假若你见到希莉娅的话，代我向她致以最好的祝福。

youdao

Give my best wishes to your bride and tell her I think she's a very lucky girl.

请向新娘转达我最美好的祝愿。告诉她，我认为她是位最幸运的新娘。

youdao