Kristen Bell has told her husband to ''have his tubes tied''.

The 'Veronica Mars' star - who has two children: 23-month-old Lincoln and two-month-old Delta with Dax Shephard - has insisted she doesn't want anymore kids and joked that her spouse should undergo a vasectomy to make sure it doesn't happen.

She said: ''Maybe I'll be a stay-at-home mom. Maybe I'll have had five more kids...

''No, I don't want to be outnumbered! I think we're stopping at two. I'm not even sharing a soda with Dax until he gets his tubes tied!''

The 34-year-old actress admitted she had worried about becoming ''crotchety'' and not being a ''fun'' parent before she had her two children but Dax, 40, put her mind at ease.

Speaking in the new issue of Natural Health magazine, she said: ''Before we had kids, I'd say to Dax, 'I don't want to be like those people.'

''I saw a few parents I didn't envy and was terrified I'd become crotchety and close-minded like them.

''And he said, 'Those people had bad personalities before they had kids.' Which is maybe the best point ever made. I was like, 'You're right! And we're fun, so let's stay fun.'''