Jessica Simpson made a guest appearance on HBO’s hit Entourage - but she wasn’t given any star treatment after she had to share a trailer with porn star Sasha Grey!  RadarOnline.com has learned.

PHOTOS: Sex Tape Celebs

Both Grey and Simpson’s names were plastered on the same trailer at the set in Beverly Hills on Tuesday although the two women were not seen together during the shoot.

• TAGS

• Adrien Grenier
• Doug Ellin.
• Entourage
• Jeremy Piven
• Jessica Simpson
• Sasha Grey
• Steven Soderbergh