Clooney downton abbey spoilers A few actors let details slip about George Clooney's coming "Downton Abbey" appearance, and it sounds like he was impressing ladies on and off screen. Photo: Reuters

Plenty of “Downton Abbey” cast members have good looks, fame and success, but apparently not enough to impress the crew. It wasn’t until George Clooney came to the set that female crew members were truly mesmerized.

"I'll put it this way: I've never seen so many female crew members arrive and be on set when they weren't actually supposed to be. It was very interesting," actor Allen Leech told E! Online.

They had to enjoy his presence while it lasted. Clooney’s role in a special Christmas short isn't expected to become a recurring character. His “Downton Abbey” appearance will be a brief snippet for charity. The special Christmas short will take place outside of the “Downton Abbey” Season 5 Christmas episode, and air in the U.K. as part of ITV’s “Text Santa” charity initiative, E! Online reports.

Unfortunately, Leech wasn’t very forthcoming about the details of Clooney's appearance. "It was great," Leech said. "And I don't want to spoil it, but it's very, very funny, I've seen it and the interactions that George has with everyone in the cast are hilarious, so I think everyone will enjoy it and it will be a real treat and it was great of him to come in and do something like that for us."

Leech’s character, Tom Branson, probably isn’t as involved with Clooney as some of the female characters. Luckily, Elizabeth McGovern was willing to spill one major detail about Clooney’s interaction with her character, Lady Grantham.

“It was special for me because there was a scripted kiss, so I was a bit shocked to see his wedding go forward after our professional day together!” McGovern told the Daily Beast.

Clooney is reportedly set to kiss the Dowager Countess (Maggie Smith) as well, but McGovern didn’t confirm or deny the rumor. “He was kissing everybody that day!” she said. “But he wasn’t trying it on, it was all scripted.”

Lady Grantham and the Dowager Countess won’t be the only ones finding romance during the holiday season. As previously reported, the full length 2014 Christmas special will feature Lady Mary (Michelle Dockery) being courted by Matthew Goode’s new character.

The “Downton Abbey” Christmas short will debut on Christmas Day in the U.K. PBS has not announced if it will air the short in the U.S. in 2015.

“Downton Abbey” Season 5 will premiere in the U.S. on Sunday, Jan. 4, at 9 p.m. EST on PBS. Who do you hope gets some alone time with Clooney? Sound off in the comments section below!