Jackie ‘O’ Henderson turns heads in a $1,100 outfit as she kicks off her 49th birthday bash with a lavish boat party on Sydney Harbour – alongside several notable guests including Kyle Sandilands, Pip Edwards and John Ibrahim

Jackie ‘O’ Henderson made sure all eyes were on her as she stepped out for her 49th birthday party on Saturday.

The radio queen, who turned 49 on January 31, kicked off celebrations by hosting a lavish boat party surrounded by a slew of celebrity guests and close family and friends on Sydney Harbour.

She was all smiles as she arrived at Circular Quay ahead of the super yacht Ghost 11’s departure and was joined by her daughter Kitty, 13.

Jackie showed off her very trim figure in a $595 Christopher Esber T-shirt that featured ‘crushed’ fabric and ripe bananas printed on the front.

She paired her look with a micro mini skirt of the same design, which retails at $495.

Accessorising with bright yellow sunglasses, Jackie also rocked nude strappy heels and a small white handbag over her shoulder.

The blonde beauty had her hair styled in a chic half ponytail, showing off her bold gold earrings.

Jackie’s daughter Kitty echoed her look in a satin yellow dress, while her hair was slicked back in a tight high ponytail.

Kyle Sandilands and his wife Tegan Kynaston lead the arrivals at the boat’s meetup point.

The 52-year-old radio shock jock, who co-hosts the Kyle and Jackie O show, looked boat party ready in a pale blue collared shirt that featured pink and yellow floral detailing.

He paired his look with navy shorts, black sneakers and sunglasses.

Meanwhile, Kyle’s wife Tegan looked stunning in a black, white and gold mini dress.

The mother-of-one showed off her ample cleavage with a very plunging neckline that ended just above her belly button while completing the outfit with a pair of chunky black heels.

Her hair was loosely curled in a soft wave and she accessorised with thick, black sunglasses and a subtle but elegant wristwatch.

Jackie was thrilled to see her radio co-host upon his arrival as Kyle threw his arms around her, sharing a warm embrace.

John Ibrahim and his partner Sarah Budge were also among the big names at the party.

The pair were seen chatting with Kyle, who appeared to be smoking a cigarette before boarding the boat and chatting onboard with other guests.

P.E Nation co-founder Pip Edwards was also at the party, wearing brown cargo pants and a loose fitted green, black and white top.

Jackie’s bestie Gemma O’Neill wowed in a figure-hugging black dress that featured red, yellow and turquoise patterns, as well and silver rings running down the side of her leg.

Her hair was styled in loose curls and a middle part, while she accessorised with transparent, green-tinted sunglasses. 

Jackie’s party has been the talk of the town for the past month. In January, she was forced to play the role of mediator when her radio colleagues began stressing out about whether they would be able to attend the birthday party.

The media personality revealed on The Kyle and Jackie O Show that tensions had surfaced as several of her co-workers were double-booked on the day of her bash.

‘You’re all invited to Jackie’s boat party. There’s a few people that you’re questioning if they’re locked in or not, they’re wishy-washy,’ co-host Kyle said at the time.

‘Can everybody just relax? Everyone has been really committed about it except for two people, our producer Pedro, who never wants to socialise, and Intern Pete, who has something else on,’ Jackie responded.

Jackie said the pair were worried about not being able to attend, which was causing some chaos in the studio.

The blonde beauty then reassured her two co-workers that while she would love them to attend there would be no hard feelings if they couldn’t.

‘It’s okay, there’s no pressure. It doesn’t matter if you’re there or not but you will be missed,’ she said.

‘We would love you both there but it’s totally fine if you’re not. Don’t feel bad or anything.’

The pair thanked Jackie for putting their minds at ease and promised her they would do their best to make it.

Jackie turned 49 in January and recently reflected on how she stays looking so youthful.

Speaking with Daily Mail Australia at Luke McLeod’s book launch for Everyday Enlightenment, being happy and positive has helped her look so young.

‘I’m a smoker of all things and I haven’t really looked after my body over the years,’ she revealed.

‘But I’ve always been a very, positive kind of person and generally happy. I couldn’t attribute [my youthful looks] to anything else, to be honest.’

She also revealed how meditation has helped her alleviate a lot of stress over the years. 

‘I think that meditation for sure gets you to a much calmer, joyful place in your life and that alleviates a lot of stress,’ Jackie said.

‘And as we know, stress is the number one factor for ageing and health problems in general. So I’m big believer in meditation.’

Jackie also said she is excited about turning 50 next year and is ‘grateful’ for what she’s achieved.

‘I’ve had a wonderful life and I really appreciate what I do have in my life. I’m grateful that I’ve lived 50 years and so I’m not afraid of it at all,’ she said.

‘I’m happy to embrace it as every decade brings something new.’