Actress Jessica Alba and her fiancee Cash Warren pose at the red carpet of the premiere of "The Eye" in Los Angeles, California January 31, 2008. [Agencies]

American actress Jessica Alba has revealed that her marriage to fiance Cash Warren will not be a grand affair.

The pregnant actress said that the ceremony won’t be an extravagant affair - because her family "hates" weddings.

Jessica, who is in her fifth month of pregnancy, insisted that she and Warren do not have any big plans for the wedding, adding that it would be a very low-key affair, which might not even involve a formal ceremony.

"I am probably going to get my certificate at the City Council, throw a big party for the family and that's about it,” she told the British magazine New!

"Everyone I know hates weddings. I've been to very big, beautiful and romantic weddings but I would rather just throw a big party," she added.