Actress Anna Paquin this morning wearing a dark trench coat to hide any first look at her growing baby bump. Credit: AKM-GSI

Anna Paquin is keeping her baby bump under wraps.

The morning after she and husband Stephen Moyer announced they are expecting, the True Blood actress, 29, was photographed leaving an office building in Beverly Hills Wednesday. Wearing a loose-fitting, all-black ensemble, Paquin covered up her stomach with her cross body purse.

Paquin and Moyer met in 2007 when they began filming the titillating HBO vampire drama True Blood. Moyer, 42, proposed in 2009 and they tied the knot the following year. "They're a great couple," costar Kristin Bauer, 45, told Us Weekly in 2011. "I like them individually and I like them together."

Moyer has two children from previous relationships: son Billy, 12, and daughter Lilac, 10. This will be his first with Paquin, who is due this fall.