Justin Timberlake makes very rare appearance with his sons Silas, 11, and Phineas, 6, at charity event in Denver

The singer walked the runway with Silas, 11, and Phineas, six, as well as his seven-year-old…

Justin Timberlake makes very rare appearance with his sons Silas, 11, and Phineas, 6, at charity event in Denver

The singer walked the runway with Silas, 11, and Phineas, six, as well as his seven-year-old…

Justin Timberlake makes very rare appearance with his sons Silas, 11, and Phineas, 6, at charity event in Denver

The singer walked the runway with Silas, 11, and Phineas, six, as well as his seven-year-old…

Justin Timberlake makes very rare appearance with his sons Silas, 11, and Phineas, 6, at charity event in Denver

The singer walked the runway with Silas, 11, and Phineas, six, as well as his seven-year-old…