Naomi Watts and Liev Schreiber's children are putting pressure on them to get married.

The couple of nine years, who have sons, Sasha, seven, and Samuel, five, have never put marriage at the top of their list of priorities.

But their boys are keen to see their parents walk down the aisle and have started helping them tentatively plan their nuptials.

A source told US OK! magazine ''Marriage was never a big deal to Naomi or Liev. But now their boys are asking whey they aren't married, so they're gonna take the plunge.''

The insider added: ''They would do anything for their kids, and they think it will be a fun family thing to plan together.''

If the couple do go ahead and get married they want the ceremony to be a small affair for just close friends and family.

The source said: ''It will be a small, intimate wedding, with just immediate family and friends. Their sons will be the only members of the wedding party.''