Our good friend over at Heroine Sheik has an article about new regulations regarding dress for models at E3.

From the source:

Material, including live models, conduct that is sexually explicit and/or sexually provocative, including but not limited to nudity, partial nudity and bathing suit bottoms, are prohibited on the Show floor, all common areas, and at any access points to the Show. ESA, in its sole discretion, will determine whether material is acceptable.

Read the full story at Heroine-sheik.com