The Who’s Who of Sydney attending Kyle Sandilands’ wedding

Sydney’s biggest wedding has begun as Kyle Sandilands and Tegan Kynaston tie the knot after three years of dating.

The $1 million wedding saw celebrities pile into a $60 million mansion in Darling Point with Karl Stefanovic and his wife Jasmine leading Sydney’s most influential.

The Today host, 48, matched his gorgeous partner in a smart all-black suit and tie with a classic white button-up shirt underneath.

Jasmine, 39, looked a vision of beauty on her celebrity husband’s arm as she donned a one-shoulder structured dress with a sky-high thigh split.

Embellishing her look with luxe designer accessories, the socialite pulled back her blonde locks into a tight, high bun to show off her genetically blessed traits.

Guy and Jules Sebastian were all smiles as they followed the couple close behind as the former prepared to play with his band during the wedding.

The iconic Australian singer, 41, looked dazzling as he eschewed tradition and dressed up in an all-white tuxedo with black loafers and a black shirt.

His beautiful wife of 13 matched her partner’s energy with a bright, colorful dress that sparkled under the sun and had a black corset bodice.

The couple spent time with friends Samantha Jade, a fellow singing competition alum, and her husband Pat Handlin.

Chatting up a storm with her former X Factor coach, the blonde beauty, 36, complemented her flawless complexion with a form-fitting bright orange dress.

The ruffled dress clung to her ankles as she swept back her blonde locks into an intricate updo.

Elsewhere, Jackie ‘O’ Henderson and her daughter Kitty impressed at her best friend’s wedding.

Sydney’s radio queen, 48, looked radiant as she showed off her slimmed-down figure in a $1,500 floral Zimmermann dress, which she paired with pink designer sandals and a matching fuzzy pink clutch.

Mother and daughter turned up a storm after getting ready in Jackie’s new $13.5 million Clovelly home and danced around in an Instagram video to Bruno Mars’ hit song, Marry You.

Born Catalina, Kitty matched her famous mother in a gorgeous pink floral dress with ruffled sleeves.

She paired her striking outfit with white strappy heels and a large white handbag.

Sarah Budge stole the show in a stunning red dress that hugged her figure.

The fiancé of former Kings Cross nightclub owner John Ibrahim, Sarah let her dress do the talking with its feathered neckline.

She paired the look with some diamond jewel base pieces and a black designer handbag before slipping into black strappy heels.

Finally, Beau and Kara Ryan arrived in style with the former rugby player, 37, dressed in a stylish gray suit.

He rocked a fresh haircut and donned a black tie and white pocket square to match his crisp shirt.

Meanwhile, his wife Kara was dressed to the nines in a complementary green dress that hugged her shape.

The blonde beauty left one shoulder bare, pulled her locks up into a stylish high bun and adorned with a unique gold necklace.