Charm and Brittani Niccole are walking advertisements for their plastic surgeon father, Dr Michael Niccole.
The sisters, from exclusive Orange County in California, both begged their dad for beauty work growing up.
Brittani, now 25, first had breast surgery as a gift for her 18th birthday.
Three years later, Michael gave her a nose job as she turned 21.
Shockingly sister Charm, also 25, first went under her dad's knife at the age of TEN when he reshaped her protruding belly button.
This year, Charm joined Brittani in having her boobs boosted, from a 32B cup to 32C.
The blonde, who works in marketing, said: "Having surgery done by my dad makes sense - he's the best at what he does and I know I'm in safe hands.
"Growing up in Orange County and seeing so many people having surgery, it never seemed like a big deal to me.
"Out here cosmetic surgery is a normal part of everyday life."
Charm and Brittani were adopted as babies by Michael and his wife Penny.
They also regularly visit their dad's clinic, Cosmeticare Plastic Surgery Centre and Med Spa, to prevent ageing wrinkles.
Charm added: "Every other month I'll get something done to my skin.
"I think Botox is important because it prevents you from getting wrinkles. I also get Botox in my armpits, which helps me stop sweating."
Brittani, a make-up artist, insists people shouldn't find it odd they've had their plastic surgery done by their dad.
She said: "Some people say, 'Isn't it weird that your dad has seen your breasts?' and I say no.
"First of all I'm his daughter and he's seen me naked when I was a baby, so really who cares?
"Secondly, he sees thousands of boobs a year so a boob to him is just an object like a pen. It's just what he does."
Michael claims his job doesn't affect his daughter's attitude to their bodies.
But he admits, the environment of Orange County may have influenced them.
He said: "There are people that would critique me for doing a breast augmentation on my daughter at 18.
"But I've been doing surgery for 30 years and I wanted the best of care, which I feel I can deliver to my daughter.
"Nobody, nobody would treat my daughter the way I would.
"I don't think I influenced my daughters personally to have surgery, because we discourage it.
"But they have grown up in an environment of beauty. Our cars are always immaculate, our house is immaculate and all our friends are beautiful.
"You could say they were influenced by that environment."
Charm and Brittani are now ambassadors for their dad's work, revealing their pals have also been under Michael's knife.
Charm said: ""Almost all of our friends have had procedures done by my dad, whether that's boob jobs, liposuction, Botox or skin peels.
"If there are ten people in a room, nine out of the ten people have had something done by my dad.
"Random people even will find me on Facebook and will say, 'oh are you Dr. Niccole's daughter? I was thinking about getting this procedure done, can you help me?'."