The four remaining members of O-Town -- Trevor Penick, Jacob Underwood, Dan Miller and Erik-Michael Estrada -- posed for a pic yesterday as they celebrated Jacob's birthday.

There's still time to join for Ashley Parker Angel to join in on the reunion fun.

See also

O-Town -- Covering Their Tracks

'O-Town' -- Ashley's Rejection 'Really Hurt'

O-Town Reunites ... Minus One Key Member

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