Lily Allen stuns in same dress Taylor Swift wore to Jack Antonoff’s wedding

Taylor Swift seems to be Lily Allen's source of fashion ideas.

The “Enchanted” hitmaker donned the same light blue lace corset dress to Jack Antonoff's wedding last weekend, and the “Not Fair” singer was photographed wearing it at Duke of York Theatre in London on Thursday.

To display the stunning Erdem outfit, Allen, 38, posed outside the venue where she is now appearing in “The Pillowman.”

The dress retails for $4,125 but is presently discounted to $1,040.36. It has ruffles and an asymmetric hem.

She completed her ensemble with a sleeked-back hairdo, a clutch from Anya Hindmarch, and high heels.

When Swift, 33, attended Antonoff and Margaret Qualley's wedding on Long Beach Island, New Jersey, last Saturday, photographers caught her donning the same cherished outfit.

The “Love Story” singer completed her ensemble with Gucci stilettos, a vintage Cartier necklace ($27, 250), Larkspur & Hawk earrings ($1,200), and a diamond finger bracelet from Jacquie Aiche ($5,435).

Additionally, she left her hair down.

Swift's attendance at the A-list wedding led to an uproar as fans caused a major street to shut down after she was spotted at the rehearsal dinner one night prior.

Spies later told Page Six that the “Back to December” singer made a 15-minute speech during the reception, which was also attended by Channing Tatum, Zoë Kravitz, Lana Del Rey and more.

The “Cruel Summer” singer has been working with Antonoff, 39, for more than a decade since they collaborated on the 2013 track “Sweeter Than Fiction.”

He later produced hits for Swift's albums from 2014 to 2022, including “1989,” “Lover,” “Folklore,” “Evermore” and “Midnights.”

Antonoff also helped Swift re-record “Taylor's Version” of “Fearless,” “Red” and “Speak Now.”