Pregnant pop star Britney Spears has been slammed by her fans for failing to write them letters on her official fan club website.

Fans have bombarded BritneySpears.musictoday.com with complaints that updates on the TOXIC singer, contests, multimedia extras and other membership features are either missing or not up to scratch.

Spears' representative says, "Britney hasn't written a letter to the site lately as she's trying to get herself settled with the baby. But she loves writing her letters and will start again soon."