People magazine reports that the couple also spent some time sun bathing on the beach with the English rose donning a tiny bikini.
It comes after they tied the knot in Mazan, a small village in Provence, France.
The couple wed at a tiny town hall near the Atonement star's farmhouse in front of just 11 guests.
They both wore sunglasses and skipped out of the town hall after the ceremony, using a Renault Clio to transport them to the reception.
The bride reportedly received an olive tree as a wedding gift from her man.
The Sun reports James presented the star with the 100-year-old plant on their big day.
He apparently gave his gift an extra romantic touch by having their initials and the date of the wedding carved into the back.
Keira and James are said to have been introduced by TV presenter Alexa Chung in 2011. They got engaged just a year after in May 2012.
- Cover Media