The footage shows missing Leah Daley wearing a dark hooded jacket and carrying a backpack.
Leah was last seen at The Warren, a coastal stretch east of Folkestone in Kent at 7pm last Sunday, May 5.
She was caught on CCTV at 3.35pm that afternoon in a dark coloured ‘Parka’ style coat, patterned leggings and ‘Converse’ style trainers.
The 24-year-old carried a black sports backpack with her hair pinned up in a bun as she walked down Tontine Street in the town centre.
Cops have released the footage in a bid to find Leah, who has been missing for nearly a week.
Leah is described as around 5ft4in tall with brown shoulder-length hair and blue eyes.
She may have attended the Folkestone Harbour area over the Bank Holiday weekend, Kent Police said.
Cops have been carrying out searches in the east of the town, including a search of the Warren area.
Anyone who might have seen Leah or who has information which could help find her is urged to call 999 quoting reference 06-1197.
More 1,500 people have shared the police appeal on Facebook amid growing concern for Leah.