Goodnight, 'One Tree Hill': The cast says goodbye

"Today marks the first day of filming the last episode of One Tree Hill ... My heart is bursting at the seams. The years we've shared laughing, crying, and growing ... What a family we are. Thank you, each and every one of you, for coming on this journey with us. #OTH9memories #ItTrulyIsAnOTHthing"

Sophia Bush via WhoSay