Former Klaxons musician James, who tied the knot with Keira in France in May 2013, was supporting his wife as she prepares to make numerous appearances throughout awards season.
Keira's role alongside Benedict Cumberbatch in historical thriller The Imitation Game has earned her several nominations, including Best Supporting Actress at the BAFTAs and the Golden Globes, which take place on 11 January.
James will no doubt be cheering his 29-year-old wife on as she goes up against Jessica Chastain, Patricia Arquette, Meryl Streep and Emma Stone during Sunday night's ceremony in LA.
At the tea party James and Keira mingled with acting talent including Rosamund Pike, Steve Carell, Marion Cotillard, Kit Harrington, James Corden and Dominic Cooper,
Keira's former flame Jamie Dornan was also in attendance, as were Frances O'Connor, Felicity Jones, Anna Kendrick, Adrien Brody
The stars of Downton Abbey, which is nominated for Best TV Drama Series at the Golden Globes, were also out in full force.
The show's writer Julian Fellowes and producer Gareth Neame joined Allen Leech (Tom Branson), Joanne Froggatt (Anna Bates) and Laura Carmichael (Lady Edith).