according to Ambition's attendants page, Natasha is having an identity crisis, and is also going by Angelina (or she decided to change her name)... I still have yet to have a session, but I have met her (she was scheduled for an appointment though) and she does look the same as the link above.
Though, I'm sure it's common for girls to work more than one place... I recall Holly (ahh, I miss Holly) worked at Ambition and also at HFH in Brampton at the same time (and I believe still there)