Jessica Alba expecting twins?

Jessica Alba is set to give birth to twins on June 8, it has been claimed.

The pregnant actress and fiance Cash Warren were delighted to discover they will be welcoming more than one baby this summer.

The source said: "Knowing that she's going to have twins has literally turned Jessica's life upside down. She and Cash have had to scrap their plans for a one-baby nursery and start all over again."

Jessica - who has been keeping up her exercise and healthy eating routine during the pregnancy - is also said to be determined not to find out the sex of her babies.

The source added: "Cash and Jessica aren't sure whether they want to know the sex of the babies now or wait to be surprised when Jess gives birth on June 8."

The 26-year-old star isn't the only celebrity expecting two bundles of joy.