Gwyneth Paltrow's engagement party

Gwyneth Paltrow celebrated her engagement over the weekend.

The 'Mortdecai' actress and her husband to be Brad Falchuk marked their upcoming nuptials with a star-studded bash at the Los Angeles Theatre.

There were many celebrity attendees including Jennifer Aniston, Cameron Diaz and her husband Benji Madden, Demi Moore, Kate Hudson and James Corden. Liv Tyler, Reese Witherspoon and Steven Spielberg were also in attendance, E! News reports.

Gwyneth and Brad confirmed their engagement in a sweet message earlier this year.

The couple said in a joint statement: "We feel incredibly lucky to have come together at this juncture in our lives when our collective successes and failures can serve as building blocks for a healthy and happy relationship."

And Gwyneth doesn't imagine she'll have a "big" wedding with Brad.

She said: "I think I'm [too] old to have a big wedding and a big ole white dress and all that. I gotta dial it back ... It's a life-long project. I think that there are certain people who have a really hard time with intimacy. I always say, I'm a good sister. I'm a good daughter. I'm a good girlfriend. I'm a good mother. That romantic slice of the pie chart of my life has always been where I find my deepest work ... I just am trying to towards intimacy instead of being scared of it and I'm really lucky that I found a partner that's patient and loves me and is willing to help me with my process."