Preformance

Gwen Stefani's Performance is always highly theatrical in accordance to the typical style of pop, gwen was one of the first pop singers after annie Lenox to bring a totally different style to the eye of the audience, which in turn brought the audience back for more every time.
Gwen always has her own style of dance and doesn't follow other artists or the typical pop convention of synchronised dance, although she is categorised into pop culture music, Gwen tends to do what she feels in the moment which the audience love especially on live performances.

Symbolisim

Gwen Stefani doesn't focus on one feature in relation to symbolism, but the thing that the audience likes to notice is the fact her makeup and hair always stay the same.
through the use of makeup and hair gwen us symbolising to be plastic, almost to be barbie, which is a child's toy, this could either be symbolising that gwen has innocence or on the other hand she could be sexualising something that is deemed to be a toy.
in most pictures of gwen you see the red lips and blond hair, this is what most people would deem to be sexy. gwen Stefani as a whole symbolises femininity and sexuality through the use of cosmetics.

A Barbie doll has even been created of gwen Stefan as gwen herself is the perfect barbie symbol.