Is It Safe to Have Breast Augmentation with Vaginoplasty?

I have performed the combination of both of these procedures.
It is generally safe. As mentioned the primary concerns are infection of the implant as well as the potential for clotting that occurs with prolonged general anesthesia and pelvic surgery. Minimizing risks focuses on antibiotics, operative technique, and DVT prophylaxis

Yes, these two procedures can be safely combined, but because of the increased bacterial contamination, there is a slightly increased risk of infection to the freshly augmented breasts. To circumvent any problems with infection, extra antibiotics may be prescribed if these two procedures are combined. Fortunately, to date, we have never had an infection when combining these procedures.

While it can be technically done and should be relatively safe as a combined procedure, I would recommend that they be done as a separate procedures.