Princess Andre, 15, can’t stop smiling as her new boyfriend helps her out of the car

Princess Andre smiled on Saturday as she was joined by her new boyfriend at her half-brother Harvey’s 21st birthday.

The 15-year-old daughter of Katie Price and Peter Andre gazed in awe at her new man – her very first boyfriend – as he helped her out of the car.

When he opened the door for her, a radiant princess stepped out in black leggings and a matching sweater.

She paired her look with a casual pair of white sneakers and white socks pulled up over her ankles.

Sweet: Princess Andre was all smiles on Saturday as she was joined by her new boyfriend at her half-brother Harvey’s 21st birthday

Princess seemed happier than ever as she walked alongside her boyfriend next to her family.

She was joined at the party by mom, Katie, and her half-brother, Harvey.

They were also joined by Bunny, eight, and Jett, nine – the kids Katie co-parents with her ex-husband Kieran Hayler.

Hey Boy looked casual in black sweatpants, a white T-shirt and a black bag slung over his shoulders.

Last week, Peter Andre, 50 – who co-parents eldest daughter Princess, 15, and son Junior, 17, with ex-wife Katie – admitted he’s anxious because his little girl has started dating.

The teen went public with her new romance when she invited her boyfriend to celebrate her mother Katie Price’s 45th birthday in Brighton on Tuesday.

Princess and her new beau joined Katie’s fiancé Carl Woods, 34, her sister Bunny and Jett for a family meal.

Mysterious Girl hitmaker Peter admitted that he “stresses like you wouldn’t believe it” because of Princess’ teen romance.

My daughter is going through that, I’m stressing like you wouldn’t believe it. So that side of it just isn’t fun,” said Pete The sun.

What a gentleman!  Katie Price and Peter Andre's 15-year-old daughter admired her new man - her very first boyfriend - as he helped her out of the car

What a gentleman! Katie Price and Peter Andre’s 15-year-old daughter admired her new man – her very first boyfriend – as he helped her out of the car

Chic: When he opened the door for her, a radiant princess stepped out in black leggings and a matching sweater

Chic: When he opened the door for her, a radiant princess stepped out in black leggings and a matching sweater

Good humor: She paired her look with a casual pair of white sneakers and white socks pulled up over her ankles

Good humor: She paired her look with a casual pair of white sneakers and white socks pulled up over her ankles

Beauty: The teen showed off her natural beauty by going makeup free

Beauty: The teen showed off her natural beauty by going makeup free

Adorable: Princess seemed happier than ever as she walked alongside her boyfriend next to her family

Adorable: Princess seemed happier than ever as she walked alongside her boyfriend next to her family

Meanwhile, Junior’s 18th birthday is fast approaching and Pete admitted to MailOnline that he was “a little nervous” about his eldest son going on holiday.

He also talked about how he would feel if Junior or Princess went to Love Island when they are older.

Peter said, “I kind of told them I’d love it if you try to present it instead of being a contestant, but again, I’ve always said that some great people have come out of the show .’

In addition to having Princess and Junior with Katie, Pete shares Amelia, nine, and Theo, five, with his doctor’s wife Emily, 33, with whom he married in 2015.

Cute!  Harvey's famous mom had previously celebrated her eldest son's milestone birthday with a sweet memory of her childhood

Cute! Harvey’s famous mom had previously celebrated her eldest son’s milestone birthday with a sweet memory of her childhood

Protective: Peter, 50, talked about Princess' teen romance and how he's

Protective: Peter, 50, talked about Princess’ teen romance and how he’s “stressed like you wouldn’t believe”

Meanwhile, Princess’ earlier in the day famous mom celebrated her eldest son’s milestone birthday with a beautiful memory of her childhood.

The glamor model took to her Instagram Stories and posted the sweet photo of the couple smiling together.

She wrote next to it: ’21 today. Happy birthday my Harvey,” and tagged his account in the upload.

Harvey, who has a rare genetic condition that affects his eyesight, as well as autism and Prader-Willi syndrome, was born of Katie’s ill-fated relationship with Dwight Yorke.