I agree with previous points about her general frugality and need of some advice at times but honestly, fashion for women over 40 in the 70s and early 80s was hideously frumpy. A lot of what she wore was fashionable for women of her age then.
The 60s she kind of took a hit too. Paola of Belgium was the star princess of the 60s and then add Jackie Kennedy and Audrey Hepburn.