Wedding Bells for Natasha Bedingfield!

Wedding Bells for Natasha Bedingfield!
Natasha Bedingfield and Matthew Robinson
Scott Wintrow/Getty

03/21/2009 AT 05:45 PM EDT

About 150 guests are expected to watch British singer Natasha Bedingfield walk down the aisle and marry California businessman Matthew Robinson Saturday at the Church Estates Vineyards in Malibu.

A source close to the British singer, 27, confirms, "She's getting married Saturday in L.A."

According to reports, Bedingfield will tie the knot in a wedding dress by Vera Wang.

The pair became engaged on Sept. 7, and an ecstatic Bedingfield revealed the happy news the next day, telling PEOPLE at a Calvin Klein 40th anniversary party, "I am so excited. It happened in New York. And I want to share it with the world. ... I'm the luckiest girl in the world."

When PEOPLE caught up with her again in November, the head-over-heels songstress sang Robinson's praises – and offered her thoughts on how to maintain a healthy relationshop.

"My fiancé Matt is hotter to me than David Beckham," she said. "He is honest, funny, charming and hot."

"Relationships have ups and downs," she continued. "If someone is worth enough to you, then you both fight to stay true through the tough times. Advice to guys: Keep the romance alive. Simple things like giving flowers or remembering special dates may sound cheesy but they do work."

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