Kate Nash was once championed by Lily Allen and now looks set to supersede her, topping off her Made of Bricks album with a Brit award. But she is hardly triumphalist. With her glitter makeup and unkempt long hair, Nash resembles the starry-eyed females in the audience on old episodes of Top of the Pops. She seems to have become a spokeswoman for hormonal young girls who cheer songs about "dickhead" boyfriends and tremble with excitement when they come to lines such as: "You're full of shit!"

Like Allen, Nash has been criticised for downplaying her privileged background in favour of affected mockney street talk, and perhaps the soundman is a secret Nash refusenik, burying her "finks" and "cups o' tea" in a shockingly muddy mix. Her voice fares better when she is alone with a guitar, although Nicest Thing's lacerating self-doubt suddenly turns into what sounds like an audition for EastEnders. With Nash confessing to feeling "weird" in the large venue, the gig rollercoasts like adolescent moods. Mouthwash - "This is my face, covered in freckles" - strikes a chord with her audience, but the new Pickpocket unfortunately results in a heckler parodying the singer's every "ow ow ow ow!"

The curiously short set suggests her rise has been that bit too fast, although Foundations triggers a real party atmosphere. She ditches the comedy accent and finds real emotion to hurl fingernail-sharp wordplay, identifying the crisis point in a relationship as the moment when her beau vomited on her trainers. Judging by the squeals, her audience has been there.

· At Barrowland, Glasgow, on Friday. Box office: 0141-552 4601. Then touring.