Fashions may come and go, but on the WB television network, the Camden family goes on and on. The network has ordered a 10th season of "7th Heaven" (search) episodes, which will make it the longest-running family drama ever on prime-time TV.

It will surpass "The Waltons" and "Little House on the Prairie," which both lasted nine seasons.

For an audience heavy on teenage girls, the WB has always tried to be relentlessly hip, from "Dawson's Creek" to "One Tree Hill."

Through it all, "7th Heaven" has usually been the network's popular show.

"`7th Heaven' has never been media-sexy," actor Stephen Collins (search), who plays family patriarch the Rev. Eric Camden, said Sunday. "We don't win the big awards, and whoever is flavor of the month will always get more attention on the red carpet. However, as Lou Gehrig once said, 'Today I consider myself the luckiest man on the face of the earth.'"