Xposure/AKM-GSIGeorge Clooney is back in London for his second round of wedding festivities!
The 53-year-old actor landed at Heathrow Airport early Friday morning to attend a special post-nuptials dinner hosted by wife Amal Clooney's parents, Ramzi and Baria Alamuddin. The Oscar winner kept a low profile while leaving the airport dressed in jeans, a navy hoodie and glasses.
"George seemed very relaxed and casual, he was so low-key that hardly anyone recognized him!" an onlooker tells E! News. "George looked very happy to be back in the U.K. and seemed excited about the prospect of being reunited with Amal."
Clooney was picked up from the terminal in a black Mercedes and whisked to his new marital home in Sonning, Berkshire ahead of the post-wedding party this weekend.
George and Amal will be the guests of honor at a Saturday night dinner, which is being hosted by Baria and Ramzi at Danesfield House Hotel & Spa in Buckinghamshire. Workers at the five-star countryside locale have already erected a large white marquee in the garden and crates of champagne, scented freesias, white lilies, purple orchids and mini white roses were delivered to the hotel this morning. Danesfield House—which the Alamuddins have booked out in its entirety—sits on 65 acres of land, which is dotted with iron statues of cupid-style angels shooting arrows and white and pink rose bushes.
As for the extravagant bash, a source tells E!, "[Amal's sister] Tala wanted to help her parents plan the party at Danesfield House and they all are eager to make this weekend one to remember for George and Amal as a thank you for the amazing time they all had in Venice. The feeling within the Alamuddin family is still very much one of celebration and joy about the wedding."
"They're keen to show George how pleased they are that he and Amal are so happy together and that he is a much-loved and cherished part of the family," adds the source. "The party is going to be everything that the wedding in Italy was—lots of celebrating with champagne, an incredible five-course dinner and then lots of dancing until the early hours of the morning."
Since tying the knot on Sept. 27 in Venice surrounded by family and friends, Clooney has been busy filming his new movie Tomorrowland in Vancouver while Amal has been working on her latest human rights case in Greece.
"They're both incredibly busy with their careers so it's lovely that they'll have this weekend to continue celebrating their new married life together," says the insider. "George and Amal are an amazing couple who totally understand and respect each others' busy work schedules while making it a priority to work in quality time to relax, have fun and do lovely things together whenever they can. Everyone's thrilled for them."
Meanwhile, George is hosting a dinner tonight from Amal's family at his Sonning home. According to a source, about 10 people total are in attendance at the posh dinner.
Watch the video above to see what George's BFFs Rande Gerber and Cindy Crawford are saying about his marriage!
—Reporting by Senta Scarborough and Jen Paul