The `Smile` singer and husband Sam Cooper - who became parents to daughter Ethel Mary last November - are said to be "thrilled" at the news they will welcome another child into the world in December. A source told the Sunday Mirror newspaper: "Lily has started telling her friends and everybody in her close circle is so excited for her. "It was a surprise but Lily and Sam are thrilled. The pair of them have loved every minute of parenthood so far and wanted to expand their brood quickly. So it`s great timing." Friends admit to being shocked by the news but couldn`t be happier for the couple, who married in June 2011 after two years together. One pal told The People newspaper: "I think everyone is a bit surprised they`ve decided to have another baby so quickly. "But they are great parents and absolutely devoted to Ethel. The pair of them are just delighted they`ve got another one on the way. "They`re such a happy family with Ethel. This is really great news." The 25-year-old star is said to be surprised people hadn`t already guessed her happy news as her figure has already noticeably changed shape. A source said: "Lily was sure people were going to cotton on to the fact she had a pregnancy bump but she seemed to get away with it thanks to wearing very baggy clothing. "Her bump has popped out very early - far earlier than the last ­pregnancy. She’s been joking she feels six months pregnant already." Almost two years ago, Lily and Sam, 34, were left devastated when they lost their baby six months into the singer`s pregnancy. In 2008, the brunette beauty - who recently confirmed she was returning to her pop career - suffered a miscarriage while dating Chemical Brothers star Ed Simons.