Matty "J" Johnson and Laura Byrne, who met on last year's The Bachelor, could barely keep their hands off each other as they mingled with other guests, including influencers Sarah Ellen, Nadia Bartel, Rebecca Harding, Kylie Brown, Violet Atkinson and Nadia Fairfax.

(L-R) Rebecca Harding, Kylie Brown, Nadia Bartel, and Nadia Fairfax at the Longines luncheon.

Photo: Karon Photography

Local oysters, Teriyaki-glazed crocodile and 12-hour confit lamb shoulder was on the menu and all washed down with On Thyme (do you see what they did there?) cocktails.

Some kicked on afterwards to the newly opened place-to-be and be-seen – Nineteenat the Darling Hotel, where athletes have been letting their hair down and catching up with their Tinder matches.

Back in Sydney, the Bolly was poppin' at the Art Gallery of NSW where an intimate, black-tie dinner was held to celebrate the launch of the champagne house's most prestigious cuvee – Bollinger R.D 2004.

(L-R) Alex Smart, Heidi Middleton, Jackie Frank and Genevieve Smart at the Bollinger R.D. 2004 dinner at the Art Gallery of NSW.

Photo: Chloe Paul

Guests including The Block judge Neale Whitaker and his partner David Novak-Piper, Ginger and Smart designers and sisters Alex and Genevieve Smart, Sass and Bide'sHeidi Middleton, and Miss Universe Australia 2015 Monika Radulovic and her partner Alessandro Ljubicic were greeted on arrival by vintage champagne-filled flutes, whilst a pianist played on a baby grand piano ahead of a three-course dinner with lobster tail for mains.

Across town around the same time at the Landsdowne Hotel, there was certainly no lobster tail and vintage champagne at the launch of Neuw's latest range Formwith General Pants.

Good old pizzas and beers did the job at the rowdy party held by the global denim brand.

Rock band Death Bells of Burning Rose records performed live for the crowd, where in true rock-star style, lead singer Will Canning went for a bit of a crowd surf in the mosh pit. As you do.