Lifetime has ordered a fourth season of Army Wives, the network said Tuesday. The network has ordered 18 episodes for Season Four, which will premiere in June 2010.

Army Wives has been Lifetime's most successful series to date, with the second season finale giving the network its highest ratings ever in the coveted 18-34 demographic.

The series is also cable's most watched drama among women 18-49, a demo the network has been trying hard to attract as it seeks to shift its core viewership younger.

The pickup also comes in advance of the Season Three premiere this June.

"This early pick-up - even prior to the Season Three premiere - is a true testament to our commitment and support of this great show," said JoAnn Alfano, Executive Vice President of Lifetime Networks, in announcing the pickup of Army Wives.

This is great news. Check back all spring for all the latest news and Army Wives spoilers as we prepare for the show's third season return in June!

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.