Nicola Coughlan has been serving us some serious drama of late. And we don’t mean as the gossip-mongering Lady Whistledown in Bridgerton, but with the stunning gowns she has been spotted wearing. Last night, Coughlan stepped out in London wearing a gorgeous ruffled, tulle midi skirt and matching top by UK label, Selezza, that had fashion fans squealing in delight.

The 35-year-old was in the capital to celebrate the 150th anniversary of iconic jewellery brand Tiffany & Co. so it was apt the star chose an outfit in the light blue hue to match the brand’s signature colour. Standing outside the iconic Harrods department store, she was there to flick the switch, turning the 7,500 exterior lights from amber to blue – the first time they have changed colour in the store’s 173-year history.

Coughlan teamed her voluminous two-piece outfit with sophisticated black Jimmy Choo court shoes complete with ankle strap and cute bows. She wore her hair in a chic up ponytail with soft strands pulled out of the front. Keeping her makeup simple with a clean eyeliner flick and neutral gloss to let her clothes do all the talking, she accessorised with glistening Tiffany & Co. jewellery, of course.

“The coveted Tiffany blue box holds a special place in my heart as I’m sure it does for many others, and so I feel very privileged to be a part of this esteemed jeweller’s 150th UK anniversary celebrations, in collaboration with Harrods,” Coughlan said. “It was wonderful to light up the sky ‘Tiffany blue’ this evening.”

This latest look comes after a string of stylish appearances. Opting for another dramatic gown at the BAFTAs, Coughlan chose a bubblegum-pink Valentino dress with bow detailing. And she made her Met Gala debut in a pink and black feathered Richard Quinn ensemble with opera gloves and sleek hair.

As the “Derry Girls” star continues to impress in the style stakes, we can’t wait to see what wears next. Read on to see all angles of Coughlan’s ruffled outfit.