How should I tell a girl I have started dating recently (we have had 3 cool dates so far) not to slouch without hurting her feelings?

[A_Gentleman]

How should I tell a girl I have started dating recently ( we have had 3 cool dates so far) not to slouch without hurting her feelings? She occasionally slouches and I find that a real turn-off!

[Anonymous]

Take her to a dance class, they will highlight her posture, couple be couples dance such as salsa or tango