Trying to date this gown, 1960s?

[Rose Clarke]

I found this beautiful gown in a thrift store and was hoping to have help dating it. I think it's from the 60s or 70s? Any help?

 

[Pinkcoke]

I'd say mid 1960s.

 

[Rose Clarke]

I'd say mid 1960s.

Thank you! I'm so sad to have to sell her but she's just to tight :'(