I got my braces off in December and I haven't been wearing my retainer. Is it too late to start? (Photo)

Based on the photos you provided, I would say that the treatment time should not take more than a year to achieve a perfect smile. After all the spaces are closed, my recommendations permanent upper and lower retainers to prevent any shift of your front teeth in the future

If your retainer goes easily into place you should start wearing it again. Retainers are meant to be worn for a lifetime, if you don't want any movement of your teeth. If the retainer doesn't go easily to place you may need to see your orthodontist to have a new one made. Definitely don't just...

This process definitely should not have anywhere near this long. I have dealt with much more severe cases in the past (trust me, they were much much worse than yours) that have taken nearly half the time you have had yours on. It is time to get a second opinion. 

EVERYONES face is asymmetric...just some people are more than others!from experience I KNOW that you notice this more than other people!Unfortunately, only surgery can fix your problem...think long and hard about doing this

My question is "Who is denying you braces?". I can't really imagine that an orthodontist would turn you away. Your case may require more than just using a retainer or Invisalign. You may need to finish off with some veneers after your teeth have been moved. I would get a second opinion from...

The easiest thing to do is try t in. If it fits the same as it did previously you should be fine. If it is putting pressure on teeth that didn't feel pressure previously I would visit with your orthodontist and have an evaluation of your retainer.