The couple, who got married in Venice a month ago, partied with close family and friends at the Danesfield House Hotel in Marlow, just a few miles away from their multi-million pound manor house in Sonning.
Of course, the party was another opportunity for Amal to wow in a designer dress. Her Venice wedding wardrobe included designs by Dolce & Gabbana, Stella McCartney and the showstopper of the weekend - her Oscar de la Renta bridal gown - but Amal followed in Kate Middleton's footsteps for the event on Saturday.
The strapless, sequin gown was available for £2,500 from Net-a-Porter.com, but there's bad news for anyone who's hoping to snap up another of Amal's dresses - it's sold out.
It sounds like this glamorous red carpet-worthy style was the perfect choice for the post-wedding bash. As the Express reports, there was no expense spared at the Marlow party, which was said to have a Midsummer's Night's Dream theme.
Guests were treated to dishes from the Michelin-starred restaurant as well as his 'n' hers cocktails. The dinner tables featured trees at the centre and were decorated with fresh pink orchids.
It must have been quite the party. Surely it's time for Mr & Mrs Clooney to settle down to married life, now?
In case you missed it, here's more from their Venice nuptials...