When you REALLY pay attention to it...
You can almost see the feud between the girls on screen....
I'm a Virgo and I can be very analytical...I take notice to things that most people don't.
But when you look at the actors when they're in the background not talking or waiting to say their lines you can kinda see their expressions of annoyance or dislike. I also knew that there was a "feud" between Shannen and Alyssa but I didn't know that Holly was somewhat involved as well.
Alyssa states that being on set felt like high school because Shannen and Jolly were always so close and you can see how there's a favoritism amongst the girls. At first they try to throw you off because Prue and Phoebe aren't exactly the friendliest when the series begins and then they try to throw you off by making them do this unbelievable cutesy scenes with them holding hands and giggling together.
During Season 1, the actresses seem genuinely happy and cutesy together which is to be expected with something new but by the time that Andy dies you can see the eye rolling, stern looks, the not so playful hits to each other in the background.
Then by Season 3 when Shannen's hair is really long everything becomes super serious. They barely have any sisterly moments anymore and when they do it all seems forced. Again, we're focused on the new level of evil theyre facing and Cole getting involved with Phoebe to really pay attention to it.
It kinda sucks though, Season 1 and half of Season 2 were golden to me. Cheesy with bad CGI....yes...but very entertaining.