Hi there- There are two reasons why combining procedures may not be in your best interests: Because the postoperative requirements of one procedure conflict with those of the other (for example, you could not combine a buttock lift with a tummy tuck because you will need to be in a reclined position for a while after your tummy tuck, and your butt lift would prohibit you from being on your back side in order to get the best results). Because the length of operation would be so long as to elevate the risks of the procedure beyond what is reasonable for elective surgery. There is no reason I can think of that your facelift would compromise the outcome of a breast lift, or vice versa. So in this regard, you should be okay. However, depending on the details of the breast lift, the details of the facelift, and who is doing them on you, the surgery MAY or MAY NOT be too long to consider safe. In my practice, I try to limit the time my patients spend under anesthesia to less than 5 hours, because while we don't have a "magic number" beyond which the risks dramatically increase, we do know that after somewhere between 4 and 8 hours of surgery the risks of scary things like blood clots in your legs go way up. Talk to your surgeon about how long he/she anticipates you being asleep, where and how you will be recovered from surgery, and whether it would be in your best interests to separate the two. It's really all about the relative risk- in my hands and in my opinion, your risks from separating the two (assuming you are having a full facelift) and going to sleep twice are lower than the risks you take being asleep for a very long time.