Gwendolyn Shepherd is the self-proclaimed Black Sheep of the family and comes from a lineage of time-travellers. On her 16th birthday, she discovered that she had the ability to time-travel. This had complicated matters for everyone because it was generally believed that her cousin, Charlotte, had inherited the ability and trained for many years in preparation.
Gwen has the rocker-chic edge in her wardrobe, from the choker to the jacket. She's without the studded shirts and jackets, or her plaids. Don't forget the black eyeliner. It really makes her bright blue eyes stand out.
She also manages to keep her style in her school uniform with pops of red and her pinkish accessories.
The cousin, Charlotte Montrose, is your typical privileged princess and it shows through in her wardrobe. Everything about her wardrobe is very classic, clean and sometimes a little retro.
My favourite outfit was the dress she wore on her 16th birthday -- a very retro 50s-style Kelly-Green gingham dress.
Here's a screenshot of a scrapbook with photos of those who inherited the gene for time-travel:
If you're interested, go ahead and check out the films but don't expect much from them. I watched Rubinrot in English dub, which was amusing because it's clear that they wanted a satirical version of your typical movie based off from a YA series. The dub doesn't quite sync well with the mouth movements of the actors but I've seen worse. Even without the dub, the original was never intended to be serious either. Then you've got the Time Warp in the second film:
Don't worry, it's not the English dub. It's just the German actors speaking and singing in English.