1. To get Allison Williams' hairstyle, create a side part in your damp hair and spritz a heat protectant throughout.
2. Then, apply a texturizing mousse to your hair and blow dry using a round brush to smooth the hair near your face.
3. Pull your hair back into a loose ponytail and secure with an elastic.
4. Wrap your ponytail around the elastic to form a bun. Secure with bobby pins.
5. br/> Finish with a medium-hold hairspray.
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