The is swearing, but it is bleeped out. However the snippyness of the sisters against each other (and cursing under stress at each other) is not a good message to send to kids.
Besides that- everything they say seems like it is coming from a reader board and they always appear to be acting fake, and not naturally. The cakes look awesome, but everything seems so fake- except when they are 'upset' and sometimes, even that seems forced and unreal.