The British pop singer is expecting her second child with husband Sam Cooper, People is reporting.
"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," a source told the U.K.'s Sunday Mirror. "Lily has started telling her friends and everybody in her close circle is so excited for her."
Allen stepped away from the music industry two years ago to start a family, and has experienced two miscarriages (one with ex-boyfriend Ed Simons, Chemical Brothers member, in 2008) before becoming pregnant with the couple's first child, Ethel Mary, who is now almost eight months old.
Allen recently stirred up a lot of excitement with her fans when she confirmed that she was making new music again.