Style #1: Turtleneck dress
Alexa Chung's is a great example of the most wearable version of the trend, often in a sweet print, but with a high neck that balances out the short skirt.
Style #2: Collared dress
This sexy seventies secretary look is courtesy of a collar that opens up to show some skin, often in a fabric with a little more structure or tailoring than the aforementioned style.
Style #3: Bell sleeves and v-neck
Whether or not your incarnation of this style is as glam as Carrie Underwood's, a deep v-neck is best balanced out with full bell sleeves. This style can look over-the-top, so it's best paired with a solid color or very simple print rather than a bold psychedelic fabric.
Style #4: Simple cut in a kitschy print
When it comes down to it, print is everything for the seventies vibe of this style. A simple, loose cut is perfect to tone down a silly print, and can be worn alone or layered easily.
Style #5: Bohemian white
A white and lacey style is best paired with bohemian accessories and layered necklaces to keep it from going too sweet. A little lace or crochet detail is sweet, but make sure it doesn't cover the look head-to-toe.