Madonna has blasted Donald Trump's sons Eric and Donald Jr.

Madonna

Madonna

The 58-year-old pop star has taken to Instagram to post a now-infamous photo of the duo posing with a dead leopard they are believed to have killed during a hunting expedition to Zimbabwe in 2012, saying it is "one more reason" she will be voting for Trump's US Presidential rival Hillary Clinton.

Alongside the controversial photograph, Madonna wrote: "How Big of. P***y Do you have to BE to kill this Noble Animal for sport? Just ask Donald Trump Jr and his brother Eric. One more reason to vote for Hilary! (sic)"

This comes shortly after Madonna visited Africa as part of her own philanthropic efforts.

During her trip, the chart-topping singer met with the First Lady of Kenya, Margaret Kenyatta, with whom she discussed "eliminating" mortality among mothers and babies.

The 'Ray of Light' singer shared a picture of herself alongside Margaret on her Instagram account, which she captioned: "Meeting with Her Excellency Margaret Kenyatta, the first lady of Kenya! Learning about her Beyond Zero Campaign which targets eliminating maternal and child mortality in Kenya and hoping to join forces to promote Female Empowerment! (sic)."

The mother-of-four also visited Kibera, Africa's biggest slum, during the trip to raise awareness of the poor living conditions in the country.

Alongside one picture of young children, she simply wrote: "Striking a Pose in Kibera! Rebel Hearts (sic)."

Madonna also posted a picture of a litter-strewn river and wrote: "Imagine this is where your water comes from! @shofco is working to change this in Kibera, Africa's largest slum.(sic)"

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