Kristen Bell has joked she weighs 367 lbs.

The 'Veronica Mars' actress is expecting her first child with fiance Dax Shepard, 37, but admitted she is expanding rapidly.

During a radio interview with CBS Detroit's Stoney and Bill, Kristen said: ''I am currently quite a bit overweight. I'm about 367 pounds. I'm not sure how far that is in months, but in pounds, that's where I'm weighing in.''

The couple got engaged in 2009, after dating for two years but have previously said they don't want to tie the knot until gay marriage was legal in the state of California, where they live.

In February, Kristen, 32, said: ''The reason we're not rushing to get married is because I don't feel appropriate taking advantage of a right that's denied to my [gay and lesbian] friends.

''That's why we've been so hesitant. Dax and I have talked about it a lot, and this issue is very important to both of us. We're just standing up for what we believe in.''