The press that Lipstick Jungle was cancelled cause a major ratings spike. The show was slated to be cancelled but now the network executives have decided to keep the show for now. In a report on the Huffington Post states:
But as of this week, the show is breathing again. The reason: it showed signs of life this past Friday, and it picked up 50 percent more viewers when delayed viewing (from DVRs and other devices) was included in the episode a week earlier.
The show also received an outpouring of support from fans.
NBC will finish out the season and if the show can grow more they may pick it up again for another season. So if you wanna keep the show on the air then you need to make sure you watch it.