Simon Cowell's pregnant girlfriend celebrated her baby shower on Sunday (08.12.13).

Lauren Silverman, who is expected to give birth to the 'X Factor' star's first child in February, was treated to a day of fun at Simon's home in Beverly Hills, California, while the father-to-be spent the afternoon at the nearby Peninsula Hotel, according to E! News.

Lauren's guests included her 54-year-old lover's former flames Mezhgan Hussainy and Terri Seymour.

The lucky invitees were welcomed to the house by a giant Christmas tree near the entrance and a buff waiter serving up festive drinks.

Lauren, who also has a son named Adam with her ex-husband Andrew Silverman, and her selected guests were surrounded by blue and white decorations in honour of the impending baby boy.

Numerous flower arrangements were on show including white orchids, yellow orchids, blue hydrangeas and white roses.

The festive-themed baby shower ended at around 6.30pm.

Last week, Lauren's divorce from former spouse Andrew was finalised and all signs point to her marrying music mogul Simon in the near future.

A source told ''Simon doesn't want Lauren to give birth to his son as a single mum. He is ready to commit.''

The couple are expected to spend some relaxing downtime in Barbados over Christmas as they prepare for their son's birth early next year.