Cropped colorful printed top with a tight, lean fit, high-waisted a-line skirt, and big platforms. Noet her boyfriend's tight patchworky jeans with crazy printed shirt, tucked in of course. 
Macrame, crochet, patchwork, and other handmade crafts were really, really big in the 70's. It was a continuation of the 60's hippie look (I think most decades reject the styles of the years before, but the 60's were so influential that the 70's definitely paid tribute to them, albeit in an updated way.) Her crochet hat, camel-toe bell-bottoms and romantic flowy blouse are an awesome casual 70's look which you could totally wear today. (Minus the hat, maybe.)
I love the psychedelic prints of the 70's, and this tight, stretchy printed shirtdress is a good example.
Halter tops, hot pants, big hair and mega platforms. This is a great summer look!
Towards the later 70's, things got a bit more sporty. This look is kind of like "Little boy whore," with its primary colors, knee socks, and suspenders. They did have hip-hugging, low waisted styles in the 60's and 70's, but the majority of pants were what would now be called "high waisted."
God, she looks sooo cool! I love the suspenders with the high-waist bell bottoms, fro, pendant necklace, and big glasses. All classic 70's signifiers.
More bell-bottoms and halters, even on what appears to be a tween.
Itty-bitty tube tops! It makes more sense to wear a high-waisted pant with cropped shirts, otherwise all your junk is hanging out. This is why I prefer vintage swimsuits, too- they're more flattering, and you don't feel like you're just wearing a pair of panties in public.
