Square Bob Inspiration Hailey Bieber's square bob looks super chic paired with a relaxed side part. Although this haircut looks polished, adding some texture will give it more of a laid-back feel.

For the occasion, Knightley wore an elegant tailored Chanel dress with a decorative black collar and embellished detailing.

Priyanka Chopra not only debuted a dramatic bob haircut but she wore a 200-carat diamond necklace worth $43 million at a Bulgari event in Rome.