The former child star confirmed her first pregnancy over the weekend, and was pictured showing off her bump on Monday (26 May) while catching a flight at LAX.
Christina wore a monochrome dress, flat shoes and sunglasses, and carried an enormous hand luggage bag while keeping her head down as she walked past photographers.
No details about Christina's pregnancy have been released other than the fact she is indeed expecting her first child with husband James Heerdegen.
Christina and cameraman James met on the set of her TV show Pan Am, which aired in 2011, and went on to marry two years later in a private New York ceremony.
The star – now 34 – found fame as a child in movies such as Casper, The Addams Family, Now and Then and Mermaids.
Her most recent work has included a role in Grey's Anatomy and TV movie Lizzie Borden Took An Ax. She appeared in an off-Broadway production of a A Midsummer Night's Dream in 2012.
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Celebrities who announced pregnancies in 2014 in pictures:
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