Dax Shepard and Kristen Bell

Dax Shepard and Kristen Bell

Kristen Bell wants a spontaneous low-key wedding.

 Kristen Bell famously vowed not to wed until same sex marriage was legalised in California has now popped the question to her partner Dax Shephard.

Kristen who used social media site Twitter to propose to Dax  admits she doesn't want an over-the-top ceremony and will probably opt for spur-of-the-moment nuptials.

It could be any day. Honestly, I could go home and we could do it today, there's no forethought really going into it

Speaking on E! News, the 'Veronica Mars' star said: "We're not having a wedding. It's not a desire of either of ours to have any sort of day of celebration for us. I feel like we get enough attention in our daily lives and we just want something sort of private that involves pen and paper.

"It could be any day. Honestly, I could go home and we could do it today, there's no forethought really going into it."

The couple - who originally got engaged in January 2010 - welcomed their daughter Lincoln in March and are keen to tie the knot soon for the sake of her future.

The couple originally got engaged in January 2010 - welcomed their daughter Lincoln in March

She explained: "We do want all of the legal opportunities that come with a binding marriage, especially now that we have a kid.

"It's very important, there are a lot of things that you need to make available and have in writing for your kid...Yeah, one of these days though."