Laura Aikman reveals secrets behind her return as Sonia in Gavin and Stacey finale

Laura Aikman surprised fans by returning as Sonia in the final episode of "Gavin and Stacey." She kept her appearance secret, even from family, and shared that she couldn't shop for her wedding dress due to the show's confidentiality. Aikman revealed that her wedding dress was sourced from Vinted and altered just before filming. She also wore a wig to match her character, as her hair was dark for another role. In the episode, Smithy gets engaged to Sonia but ultimately leaves her at the altar for Nessa. The storyline was designed to mislead viewers about the wedding's outcome.