mariahcareypic230.jpgMariah Carey and Nick Cannon are getting ready to expand their family ... times two! The songbird and her hubby are pregnant with twins, according to Star.

After trying to keep her pregnancy a secret for months (we SO knew she was pregnant!), Ms. Carey was not-so-careful with her secrets while promoting the holiday album, Merry Christmas II You.

When asked about giving birth so close to the holidays, Mariah told Radio Disney's Ernie D. during an interview:

    "I just hope that they don't turn out hating Christmas!"

Oopsie! So much for keeping the secret on the down low. Twins can be so expensive. We hope she and Nick can swing it!