The popular television host was pulled over at 11:30am in Eton, Berkshire, on Saturday,
The telly favourite, who has two children with ex-husband Paul Sampson, was stopped by police as she reportedly drove to collect her children.
The 41 year old was released on bail, and will appear at Slough Magistrates’ Court on 4 September.
Thames Valley Police said: “Kirsty Gallacher, aged 41, was charged last night with one count of driving a motor vehicle when alcohol level was above the legal limit.”
Kirsty previously dated rugby star Danny Cipriani, before finding romance with a mystery man this year.
Following the split last year, Kirsty – who is 12 years his senior – told OK! magazine: “As a woman, you kind of come into your own in your late thirties and forties.
“You know yourself and you know what you want.”
She added: “I feel great – I’m at a good point in my life.”
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