Are my Breasts Saggy

From the vantage point that your photos were taken from, its difficult to assess how much sagging breast tissue you have. A vertical breast lift with a small amount of reduction from the lower portion of the breast will substantially improve the shape and position of your breasts. The areolar diameter will also be substantially reduced. Good luck ! 

Thank you very much for your enquiry and enclosing your photograph. It does look
a little bit as if your nipples are in a slightly low position and your right
looks slightly lower than your left. Breast sagginess is known in my profession
as breast ptosis and is generally measured by the relationship of the nipple to
the fold underneath you breast.
If your nipple is at or below the fold, you
are considered to have some droop.
From your photograph I would assess that
you have slightly more ptosis (droop) on the right side and if you were
considering surgery I would possibly recommend you consider an uplift procedure
at the same time.
With best wishes.

Thank you for the question and picture.

There are a variety of different ways to address your concerns. Exactly the procedure that is performed depends on your goals in regards to size, shape, superior pole volume etc.  For  example you may benefit from mastopexy (breast lifting) of both breasts  or breast reduction surgery.
 

Like with any surgical procedure, you should carefully consider the benefits of the surgical options versus the potential risks/complications.  You should also be aware of the presence of scarring (and potentially abnormal scarring)  and her ability to accept them.

In person consultation with a well experienced board-certified plastic surgeon along with a detailed discussion of the pros/cons of surgery will be in your best interests.

Best wishes.

Your breasts are large and have some ptosis, which is the result of the heaviness. The nipple areolar complexes are large and spread. I think you would benefit from a small reduction, which is effectively a lift, and reduction of the areolae. It is slightly difficult to tell from the photographs but there may be a difference in the nipple heights which is aesthetically displeasing. This can be corrected at the time of surgery.

Your breasts are fine. I would not perform surgery on you at this time in your life.