Can the vagina become loose after a tummy tuck?

The vagina is technically not affected by a tummy tuck. However, the tummy tuck can temporarily distort the external labia majora from tension. This distortion may be what you're experiencing. If this is the case, as the tissue relaxes things should settle back to normal. 

Thanks for your question.  No, the abdominoplasty does not affect the internal anatomy of the vagina.  Initially, several of my patients told me that their 'vagina' was significantly tighter after the abdominoplasty procedure, but this was due to the upward pulling of the mons pubis (the pubic area and labia) which gave the altered sensation.  Most said that it felt normal again over time.Dr T