Posture corrector/shoulder brace - any experiences and recommendations?

[mathnerd]

I have shoulder posture correctors showing up all over my advertisement feeds in several websites. I was looking for exercises to correct neck and shoulder slumps and that could be the reason. Anyway, the videos of these posture correctors look as if they are very effective but I would like to get some recommendations on brands. Could anyone who has used them please give me some inputs? Thanks.

[Pen]

No recommendations on braces.

I recommend Esther Gokhale (spelling?) for exercises.  

[gardenmom5]

if you want to improve posture - improve abdominal muscle tone. 

it doesn't take many yoga practices to improve my posture (I've had a knee injury - from other things, that has interfered with my ability to do yoga.)