The theft happened at the JoJo Maman Bébé shop on High Petergate, York, at about 2.45pm on November 7.
Also in crime: Poachers fined at Scarborough Magistrates' Court after admitting hunting with a dogA woman took a large, grey Radley purse from the handbag of another woman, before leaving the store.
Appealing for information, a North Yorkshire Police spokesman today said: "Officers are requesting the public’s assistance to help establish the full circumstances surrounding the incident.
"They want to speak to a woman pictured on CCTV as she may have important information that could assist the investigation."
Anyone who recognises her, or has information that could assist the investigation, is asked to email [email protected] or call 101, select option 2, and ask for PC Alicia Oakes.
Information can also be passed on anonymously via Crimestoppers on 0800 555 111.
Please quote the North Yorkshire Police reference number 12180208536.