There are garden parties. And then there are garden parties. The kind where the lemonade is spiked, the bunting looks suspiciously like Prada, and the hostess is giving full Margo Leadbetter-meets-Marie Antoinette energy — mid-champagne, mid-hydrangea, mid-breakdown.

And now, Sloane Street has hosted one of its own. For the first time ever, the storied Cadogan Place Gardens played host to a celebratory garden party — an invitation-only affair to toast the Street’s elegant new look, with plenty of champagne, excellent tailoring, and just enough lawn to get lost in.

And what to wear to such a thing? A dress. A big one. Preferably frothy. Think ruffles, ruching, lace, chiffon — the sort of unapologetic frill that suggests you’ve been whirled backwards through a vintage haberdashery stall (in the best possible way). 

The palette? Cotton candy pinks, lemon sherbet yellows, baby blues — My Little Pony in full Stepford Wife regalia. A bit Sofia Coppola’s Marie Antoinette, a touch Wes Anderson, a dash of Mrs Slocombe’s latest rinse.

The vibe? Sweet — but with bite. There’s edge to this much sugar. It’s all in the attitude (and ideally, the gloves).

Silhouettes are veering longer this year — which works wonderfully for wafting across lawns with a drink in hand and mystery in your eyes — but this is no moment for subtlety. Gucci’s short, sheer pink number is proof that wallflowers can bloom too.

Floral prints are, of course, welcome — especially in blown-up pastels or nostalgic Liberty-style micro florals. Or try this season’s surprise botanical twist: the cherry. Embroidered, appliquéd, or sculpted into a heel (yes, really), it’s ripe for the picking.

The only rule? Own it. Teeter on the balls of your feet, avoid gravel at all costs, and remember: there is no such thing as too much tulle.