Olivia Rodrigo is currently on the UK leg of her GUTS tour.
On Friday, the Vampire hitmaker welcomed Lily Allen to the stage during his performance at the London O2 Arena.
Previously, the duo sang Allen's F*** You in response to the US Supreme Court's decision to overturn Roe v Wade.
Dressed to impress, Rodrigo wore a black bra and matching shorts with a sparkly overlay and fishnet stockings, while Allen showed off her abs in a white tank top and black Miu Miu mini skirt.
The duo's chemistry was palpable as they sang, “At first when I see you cry, it makes me smile.”
Allen also expressed his gratitude on Instagram, posting: “It's been a while since I sang at the O2. What a lovely audience, what a lovely team. Thank you @oliviarodrigo.”
