Picking up from a comment in another topic:
depending on the time period and storyline "leading lady" status was granted to alexandra moltke, joan bennett, grayson hall or lara parker. at it's best it was never KLS with the possible exception of the three months she played josette as an actual flash-and-blood character during the 1795 period. there it could be argued she was the "lead".true she did receive an elevation in status when moltke left the program and maggie was brought in as collinwood governess, junior sophisticate and resident ingenue-in-distress. but otherwise it was strictly supporting.
Well, I think it's safe to say that when you get your own wardrobe credit, you are a leading lady.
I see it this way.
Leading ladies timeline. (I think there are multiple per time period.)
1966 up to the 1795 flashback - Joan Bennett and Alexandra Moltke
1795 - Alexandra Moltke, Lara Parker (and Kathryn Leigh Scott)
1968 up to 1897 flashback - Grayson Hall
1897 - Joan Bennett, Kathryn Leigh Scott, and Lara Parker
Late 1969 to 1970 - Kathryn Leigh Scott, Grayson Hall, and Nancy Barrett
1970PT - Lara Parker
1970 - 1840 - Lara Parker and Kate Jackson
1841 PT - Lara Parker
HoDS - Kathryn Leigh Scott and Grayson Hall
NoDS - Kate Jackson and Lara Parker
As soon as Kitty Hampshire appears on screen, I think it is safe to say that KLS is a confirmed leading lady in the series.
Though Joan Bennett should have always been the lead female, her role was pushed to the wayside more often than not after Barnabas arrived, but she really does shine in 1897, re-asserting her position as the star of the show (along with rising-star Selby, who probably outshined Frid for the remainder of the run).