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OTRC: Kristen Bell jokes about pregnancy weight gain: 'I'm about 367 pounds' - Listen

Kristen Bell and Dax Shepard appear in a satellite interview with OnTheRedCarpet.com on August 13, 2012.

Actress Kristen Bell had a light hearted view of the weight she has gained during her first pregnancy.

During a radio interview with CBS Detroit's Stoney and Bill on Wednesday, December 12, the 32-year-old actress was a mystery guest and gave a hint to the hosts by saying, "I was once hottie of the week but I am currently quite a bit overweight." The interview can be heard below.

After the hosts correctly identified the Michigan native as the voice on the phone, Bell replied when asked how far along she was in her pregnancy, "Pretty far. I'm about 367 pounds. Not sure how far that is in months, but in pounds that's where I'm weighing in."

When asked if she was giving birth to a baby or a sloth -- a reference to the actress' love of the animal -- Bell said, "Nobody knows. Honestly, nobody knows. I'm certainly hoping it's a kid."

The station was holding a contest for a listener to win a trip to Lakeland, Florida to take part in the Detroit Tiger's Fantasy Camp.

The listeners had to get a famous person to call into the show on their behalf and the hosts didn't know what celebrity was on the line until they spoke. Other notable people who called into the contest included Barry Sanders, Debbie Gibson and YouTube celebrity Ted Williams aka the Man with the Golden Voice.

Bell's fiance, Dax Shepard, was actually the first to call in on behalf of a friend named Aaron Weakley. Bell later called in on behalf of Weakley as well and he ended up winning the contest.

The "House of Lies" actress first announced her pregnancy in November. Bell is reportedly due in the spring of 2013. It will be the first child for both Bell and Shepard, who currently stars on "Parenthood."

Bell and Shepard, 37, confirmed their engagement in early 2010 and started dating about five years ago. They have not announced a wedding date.

Bell recently co-starred with Shepard in the film "Hit and Run." They also appeared together in the romantic comedy "When In Rome."

Listen to Bell's radio interview below.

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