Lily Allen Flaunts Sideboob in Bold Tour Outfit

set pulses racing with sizzling behind-the-scenes snaps ahead of taking to the stage in Boston amid the US leg of her West End Girl tour on Monday. 

The British songstress, 40, looked sensational as she went braless and flashed major sideboob beneath a skimpy stars and stripes co-ord. 

Lily's barley there look featured tiny lace trimmed shorts and a revealing top while an oversized Boston Red Sox's shirt slip down her shoulders. 

Posing up a storm the stunner also wore a pair of racy fishnets along with towering black heels as she frolicked backstage ahead of the show. 

Lily captioned the post:  'RED SOXS & Polka Dots'.

Last week   paid a visit to Niagara Falls and hung out with 13 Reasons Why star ahead of her Toronto show.

The hitmaker shared photos of herself admiring at Niagara Falls with a friend before going for a bite to eat along with a photo with Tommy in a cafe.

The singer wore a black turtle neck jumper in the snap while her friend Tommy sported a brown jumper and a white T-shirt.

Alongside the post, Lily wrote: 'What to do with a day off in Toronto'.   

Lily and Tommy have been pals for a while and have attended events together including the Chanel Tribeca Festival Artists Dinner in New York back in June. 

The West End Girl album is an ode to Lily's ex-husband David Harbour, 50, and their acrimonious breakup, and the star is currently

The new album was nominated in three categories at the 2026 BRITs but unfortunately she didn't walk away with any wins during the ceremony. 

Lily he was using the celebrity dating app Raya.

It was previously reported that she had checked herself into a trauma centre after telling friends she was close to a nervous breakdown following her marriage breakdown. 

She was expected to take part in intensive group counselling sessions and one-on-one therapy during her stay at the US based, £8,000 per week clinic.

Lily defended her decision to check into a trauma centre, away from her daughters, admitting it was 'getting harder to be there' for her kids'.

She shares two daughters Ethel, 13, and Marnie, 11, with her ex-husband Sam Cooper.