Amanda Knox SPEAKS at Tearful Homecoming

10/4/2011 6:03 PM PDT

Amanda Knox SPEAKS -- Tearful Homecoming in Seattle

Amanda Knox broke down in tears ... as she spoke to the public for the first time during an emotional homecoming in Seattle moments ago.

Amanda stepped to a podium setup for her at the airport, and said ... through tears, "I'm really overwhelmed right now."

Amanda thanked her supporters and also joked about remembering to speak in English after spending four years incarcerated in Italy.