This list includes current shows that are still airing. This list does not refer to costuming but stylish modern clothing.
Not because of the ratty clothes they wear on the island but the clothes in the flash backs. I knew that the stylist of Lost paid attention to fashion when I recognized a Catherine Malandrino dress on Sun.
It's all about Chloe; from her hair to her personal style. She always looks awesome. She can go from youthful casual to news office preppy and still look chic.
Allison and Nathan always look fantastic. Nathan's suits drape off of his body like a dream. Allison always looks classy. Sometimes she goes power suit, sometimes she goes business casual. She is at her best when she's in a flirty dress. Chloe has a unique youthful style. Her first season was a little rough around the edges because they let her dress herself. I can tell that someone has put their foot down.
 The 4400
The hair in The 4400 is amazing. I will go as far to say that 4400 has the best hair in science fiction. Diana's sister, April went from being a tragic proto- goth to a fabulous bird. I'm still drooling over the outfit in her last appearance. Though I didn't like the character, Alana always had on something funky and urban. Kyle's imaginary friend, Cassie has a great artsy, coffee house thing going on. They even brought in a new girl to give the geek boys fashion tips!
Two words: Grandma Petrelli. I've had such a fashion crush on her every since I saw her in her Burberry jacket. Nothing gets me all aflutter like Burberry. She always has on a diva mink collared/cuffed coat. When I grow up, I want to be as stylish as Angela Petrelli.
Charmed; The stylist on this show took risks. Some of them were wild but for the most part the Charmed Ones looked really great.
Buffy; The first couple of season were HORRIFIC! In the later seasons, Sarah Michelle Gellar became a bit of a fashion icon. She is still seen at fashion events. (Go back to blonde!)
Star Trek: The Original Series; Even though this is a costumed drama, Star Trek inspired me to learn how to sew.