Pop star-turned-Tv presenter Myleene Klass has vented her anger after her mum and sister became the victims of a street robbery on Thursday (09Jan14).

The former Hear'Say star's 67-year-old mother Magdalena and sister Jessie were on a shopping trip in London when a thief reportedly grabbed their bags and knocked them to the floor.

Following the incident, Klass took to Twitter.com to share her frustration, writing, "To the person who mugged my 67-year-old mum and my sister. I hope you get hit by a bus and die. Slowly."

The two women have not been hurt and the incident is currently being investigated by London's Metropolitan Police, according to British newspaper The Sun.

It is not the first time the family has been targeted by thugs - Klass was also the victim of a street attack in the British capital in 2005.