Pop Icon! She would have to do like Madonna & release a 'Ray of Light" to get the title of Legend because that's when the public as whole would respect her! Ppl already respect for lasting as long as she did but she needs to make a "Ray of Light" type album to get Legend title!
She has contributed so much in pop music. At the end of the day, talent is subjective, but no one can deny all the success she's had throughout the years. She made a great recovery after 2006 when she spiraled out of control, and she's an example that with great determination and strength anyone can comeback. Lindsay Lohan, please take note.
When I think of an icon, I think of a person who's name is synonymous with a certain craft, subject, whatever. Elvis was an icon. Coco Chanel was an icon. Muhammad Ali, also an icon. Marie Antoinette <--- an icon. Louis Armstrong, etc, etc. I wouldn't say Britney is an icon, although I could understand why a younger person who's never heard of Debbie Gibson or Tiffany would think so. Ms. Spears is definitely a legend tho, no question about it.
EDIT: Google searched it. Icon = A person or thing regarded as a representative symbol of something. So, I guess BS could be A teen pop icon, much like Madonna is an 80's icon.