Trying to recall British TV drama from 2000s about teen model

No earlier than 2000, no later than 2015. I think two series, maybe 12 episodes total. Possibly the title included some play on the word "Beauty" or "Pretty".

The main character teenage girl was dark-haired, either from a "low-class" neighborhood of the greater London area or from a smaller city that's generally associated with working class.

I think the actress playing the modeling scout/agent may have done a guest spot in the Doctor Who revival?

She tried to fit her new modeling career in with her normal school and social life. I don't think she kept it secret, just that she was apprehensive about the two worlds meeting.

Her parents were both alive, they weren't dysfunctional, they were supportive and not (AFAIR) exploitive of her new career, but they were definitely out-of-place accompanying her to London for fashion shoots and runway shows, etc.

She had an older sister who was generally considered "the pretty one" and was deeply jealous that the scout didn't think she had the right look for modeling. There may have been a brother as well.