Lorde -- Dear New Zealand, I'm Back with 2 Freakin' Grammys

Lorde just flew back to her homeland Tuesday like a conquering hero -- armed with 2 Grammy Awards ... and a ridiculously nice handwritten thank you to her fellow Kiwis.

Lorde took out a full page in the New Zealand Herald for the note -- fresh off winning Song of the Year and Best Pop Solo Performance. 

Gotta say ... the 17-year-old scribbled a pretty damn charming note: "Without your support, there's no way I would ever have gotten to stand in the middle of the Staples Centre & perform in my school shoes."

You can call her Queen Bee. 

| TMZ.com