to begin to open; to come out; to smile broadly; to come apart at the seams (clothes)
open seam; seam that has come apart; tear
to come apart at the seams; to be ripped; to begin to open; to begin to bloom; to smile broadly; to break into a smile
to break into a smile; to smile broadly; to beam
to rip up (a seam); to burst; to tear; to break out (e.g. into a smile)