When I look back at our seventies icons; Faye Dunaway, Jacqueline Bisset, Ali MacGraw, they are all so so stylish, but a bit...serious? If one girl always seemed to have fun, as she still always seems to be having, it's Goldie.
I am sure Kate Hudson took some notes, and maybe even stole some from her mom's closet, when she played Penny Lane.

So take inspiration for the seventies trend from the ultimate sunny Californian , lots of peasant dresses, stripes, flares...
And check her out being so young and so funny)