Which one would you recommend to do first; Tummy tuck or breast augmentation? (I am not doing both at the same time)

I plan to have an under breast incision for the augmentation. I read somewhere that if a breast augmentation is done first, the scar from the augmentation will be pulled down when the tummy tuck skin is pulled down. Is this true? Thank you!!! (having both surgeries done at the same time is not an option for me)