'Pitch Perfect' Star Alexis Knapp -- Oops ... My Candle Torched My Condo Bldg.

Alexis Knapp's kumbaya moment with a candle went up in flames ... and so did her condo bldg.Alexis -- famous for her roles in "Project X," "Pitch Perfect" and "I'm Ryan Phillippe's baby Mama" ... left her unit with a candle still burning and it…

Summer Altice Summer Glau Sunny Mabrey Susan Ward