Judith Butler's theory suggests that gender and the way we feel about our gender is a construct based on what we do, such as performing certain actions or behaviors.
The particular behaviors for females, according to Judith Butler, include putting on makeup, wearing high heels, and dresses, which are considered feminine in terms of gender.
Zoella's vlogs, discussing makeup, shoes, clothes, spa days, and other traditional feminine behaviors, are examples of how her repeated rituals construct a certain idea about what it is to be female.
Hukka magazine's interview with Arabia Felix and Jacob Tobia, where they discuss their own gender identities, is an example of how individuals can construct their own gender identities by performing certain rituals.
If you just do these tasks once, it doesn't construct your gender, but if you perform them as rituals or more regularly, it can affect your ideas about gender.
Judith Butler's theory suggests that if you were brought up in a typical masculine way, your behaviors and actions might lead you to believe that those are male performances.