Katia is not only Pete's wife, but she also shares the stage with the musician, playing the keyboard for Puta Madres, the band Pete formed post-The Libertines and Babyshambles.
Away from fame, Pete and Katia are thought to live a quieter family life in the charming coastal town of Etretat in Normandy, France.
Katia's cousin Julia Mallet also took to social media with a snap of Katia in her wedding dress with the caption: "When you find out your cousin got married overnight!!
Pete revealed in early 2024 that he had been diagnosed with type 2 diabetes, and in an update this week said he was told by doctors that he could have his toes amputated as he grapples with the condition.
Pete emotionally expressed his gratitude towards his wife for her pivotal role in his journey to sobriety, putting an end to his battles with drug addiction.