There are thousands of beautiful women in this world; clothes and makeup are the key to outshining others.
Every woman has a style that suits her best.
For example, Hailey may be a vile woman who was also a chronic adulterer, but pure and innocent outfits were the fashion style that suited her the best.
Her pretty face was one in a million and she could easily put on an innocent expression to coax and deceive her boyfriend anywhere at any time. Hence, she was naturally suitable for that style.
If she were to wear sexy clothing like skin-tight dresses or lace clothing, she probably wouldn't be able to carry it.
On the other hand, Victoria was a mature woman who wouldn't suit such pure and innocent clothes. If she were to dress in a preppy chic style, it would sabotage her looks.
Only by dressing in professional business wear would her aura as a domineering CEO be accentuated. She was the most perfect.