Vocal Evolution: Kelly Sheridan's voice for Barbie got more high-pitched and squeaky as the years passed.
Vague Age: Barbie is often portrayed as being a teenager in several adaptations, but has also had pregnant married friends, gotten married herself, and gone through just about every career known to man throughout the doll's history.
Unlimited Wardrobe: It's literally the size of a small country in Life in the Dreamhouse.
Spoiled Sweet: She's obviously wealthy but is still the nicest girl you'll meet.
Princess Classic: She always plays as one if there's a story involving a princess.
Pimped-Out Dress: She's often portrayed wearing many of these.
Only Known by Their Nickname: She's never referred to as "Barbara".
Official Couple: She and Ken have stayed a couple since The '60s, bar a brief breakup during the Turn of the Millennium.
Nice Girl: She's rarely ever mean or unpleasant and always enjoys helping others.
Imagination: Her role as narrator of several direct-to-video movies proves her as quite the storyteller. I've had so many careers, it's hard to keep track of all 135 of them.and counting!
Jack-of-All-Trades: Provides the page image.
Impossible Hourglass Figure: Her waist looks pretty small in comparison to her bust and hips.
Hidden Depths: A Fashion Fairytale shows that shes just as human as the rest of us (but plastic).
The Heroine: The star of this toyline, and the majority of stories that tie into it.
Hair of Gold, Heart of Gold: She's always depicted with blonde hair and often presented as very sweet and feminine, although this is sometimes subverted as she occasionally has other hair colors.
Girly Girl with a Tomboy Streak: She's quite feminine but has had numerous camper and sports sets.
Sometimes she also designs and/or sells clothes.
The Fashionista: Mattel originally promoted her as a "Teenage Fashion Model", a job she occasionally resumes today.
Everyone Loves Blondes: She has several friends, and had more than one boyfriend.
Cool Big Sis: To Skipper, Stacie, Kelly/Chelsea, and Krissy.
Celebrity Star: Shes a famous actress in-universe.
This applies to all the other dolls on this page, too.
Barbie Doll Anatomy: Her lack of genitals makes her the trope namer.