Birthday

sweet sixteenth    - 10代の頃
champagne birthday    - 日付と年齢が同じ年の誕生日 : 26日生で26歳になる日
toast   - partyなどでのスピーチ : I'd like to make a toast to him.
blow the candles out    - ロウソクを吹き消す

- On letter
Congratulations on ...
Warm wishes ...
Sending you my congrats ... / wishes ...
Wishing you an amazing ... / a great ... / a wonderful ...
My deepest congratulations on ...
I hope you have ...
May you have be ...
I would like to take this opportunity to ...