Will loosing 15 lbs after my tummy tuck affect my results? Will my skin now be loose?

Losing a small amount of weight like 15 pounds after a tummy tuck will only improve your results.  Problems with more loose skin will not occur unless you lose a lot of weight (50 pounds or more).  

  Losing 15 pounds after tummy tuck will not affect your result to any great degree.  This may improve your result.