Will 485cc HP make me to top heavy? (5'0/110 lbs). (Photos)

485 cc implants will certainly make your a D cup if that is what you desire.  The size I would consider a bit on the large side, but not to the point of going overboard.

Unfortunately,
you have not told us your bra size but you look small.  485 cc implants weigh over 1 lb each, will
result in breast descent and will probably not fit.  At size 32 or 34, each 100 cc of implant
corresponds to 1 cup size change.  At
size 36 or 38, each 200 cc of implant corresponds to 1 cup size change.  From this, you can compute the volume required
to achieve your desired goal.  Best Wishes,Gary Horndeski, M.D.

The implant selection should be based on a combination of your desired size, soft tissue dynamics, breast base diameter and skin elasticity.  I recommend an in-office examination as well as a detailed discussion with a surgeon who you are comfortable with.   Finally, make sure your surgeon is a Double-Board Certified Plastic Surgeon certified by the American Board of Plastic Surgery (ABPS), a member of the American Society of Plastic Surgery (ASPS), a member of the American Society of Aesthetic Plastic Surgery (ASAPS), and a fellow of the American College of Surgeons (FACS).Best,Dr. DesaiBeverly Hills Institute for Aesthetic Plastic SurgeryHarvard Educated, Beverly Hills & Miami Beach TrainedDouble Board-Certified, Double Fellowship-Trained Beverly Hills Plastic Surgeon