Singer Katie Underwood, and her partner, marketing manager Darren McCoy, welcomed twin girls last week. Their daughters are called Charlotte and Zoe, and Katie announced their births on her Facebook page.

Katie Underwood became famous as a member of girl group Bardot, who formed during the first season of reality TV series, Popstars, in 2000. After the band broke up in 2002, Katie worked with various dance music groups, and now has her own jazz band.

Darren and Katie met on Facebook, and have been living together since September. They planned to wait a year before starting a family, but the twins made themselves known slightly earlier than expected.