Robert Pattinson to appear in "Entourage"?

Kristen Stewart and Robert Pattinson on the set of "On the Road"

"Robert Pattinson named celebrity king. Robert Pattinson and Kristen Stewart, both stars of Summit Entertainment's wildly popular "Twilight" franchise, were named celebrity king and queen according to recent reports. E! Online hosted a voting panel where readers were able to cast their votes toward sixteen male celebrities and sixteen female celebrities. Pattinson and Stewart came out on top.
Robert Pattinson and Kristen Stewart as Edward and Bella in Twilight "Eclipse" (2010)

Does anybody really find this surprising? We sure don't considering "Twilight Saga: Eclipse", the third entry in the popular vampire series, was one of the hottest films of the summer and the upcoming forth installment titled "Twilight Saga: Breaking Dawn" is one of the most anticipated films of 2011". Source: www.reelempire.com

Robert Pattinson in company of his particular Twilight "entourage".

"There's a word buzzing around out there that Robert Pattinson is a guest star on the season finale of "Entourage". This is a curious case if it's proven true because HBO has been keeping it as a secret while in fact Pattinson's name could potentially lure additional viewers to the September 12 episode.
Scan of "My name is Robert Pattinson" italian book

Pattinson, according to eWorldPost and TV Spreadit, is guest starring as Ari's most difficult client ever. Now, apart from the silence from HBO, IMDb and other reliable sites have not mentioned his name in the line-up but then again, Christina Aguilera and Eminem who have been confirmed by the network to appear in the finale, are also not listed.

The synopsis from HBO is not hinting any Pattinson either. It says, "Mrs. Ari is still fuming over Ari's angry meltdown the night before, Ari tries desperately to keep her surprise party on track. The guys attempt to stage an intervention for Vince, who has gone off the deep end. Turtle scrambles to find investors to save the tequila business. Eric receives an unexpected request from Terrance McQuewick, which leads him to consider Scott's business proposal."
In conclusion, it's possible that Pattinson is a well-kept surprise from HBO and the actor is made one of the guests in the party. After all, exec producer Mark Wahlberg did consider to bring the actor over, saying "Yeah. We'll see about that." Source: www.aceshowbiz.com

UPDATE: According to GossipCop.com: Robert Pattinson is NOT going to do a cameo on “Entourage.”

A source close to the star tells Gossip Cop exclusively that it’s “not true.”

"Could "Entourage" star Kevin Connolly be romancing Chloë Sevigny? They were spotted looking "very much like they were on a date" at Nobu 57 the other night. A spy said, "She was very dressed up and looked stunning. They went outside for a cigarette, where they seemed clearly interested in each other." Connolly is getting a reputation as an unlikely Casanova, having romanced Nicky Hilton and Julianne Hough of "Dancing With the Stars." He was also linked to Hayden Panettiere although they denied it. Connolly's rep declined to comment. Chloe Sevigny in "Io Donna" magazine July 2010.

Sevigny's rep said, "I do not comment on Chloe's personal life."
Source: www.nypost.com

Chloë Sevigny and Jake Gyllenhaal attending "Zodiac" Premiere at Cannes Film Festival on 17th May 2007

"Jake Gyllenhaal" cover of Colleen Adams' book (2007)

"A fictional Aquaman movie played a central role in the second season and part of the third season of the HBO show Entourage. In the episode "One Day in the Valley", Aquaman premieres to much fanfare and opens with a three-day weekend record of just over $116 million (barely beating Spider-Man's $114.8 million). Later episodes established that within the fictional world of Entourage, the Aquaman movie went on to become the highest grossing film of all time. A sequel was made without Vincent Chase. The fictional sequel starred Jake Gyllenhaal, was directed by Michael Bay and written by Kevin Smith". Source: en.wikipedia.org

Ben Stiller honored by "Museum Of The Moving Image" - Salutes Ben Stiller (November 2008)

A couple days ago, Ben Stiller made a joke at "Entourage" show's expense:
"Other people talking about Entourage gives me time to do my mental chores". -Ben Stiller via Twitter

One girl replied to Mr. Stiller: "How rude" -because she's a fan of "Entourage" and Ben explained her: @Elizabeth_Rocks "-- no rudeness intended just an observation I found amusing. Could plug in many many shows ive not followed the story lines"