Brazilian butt lift and breast implant removal: I am 5'8 and I currently have silicone implants.

Thank you for sharing your question.  It is possible to have your implants removed and a BBL performed in the same operation but your result after explantation will depend on your current breast appearance and skin quality.  Be sure to see an ASPS board certified plastic surgeon in consultation.

Hello!
You can safely have both procedures done at the same time.  Whether or not you need a lift depends on what your breasts looked like prior to implants, and what your goals are (what you want or expect to look like) once they are out.  It is likely that you will have some stretching of the skin and therefore your best result may be a lift, however the fact that you are young means you have the best chance of the skin retracting back to a natural result.   Best of luck to you!