Jennifer Lopez was reportedly paid US$1.5 million (NZ$1.9m) for a controversial performance in front of the Turkmenistan leader.
The singer sang Happy Birthday Mr President to Gurbanguly Berdimuhamedow at a controversial concert in the Central Asian state.
The country has been described as having "one of the world's most repressive" regimes because of its terrible human rights record.
Lopez's performance took place in the US$2 billion resort of Avaza, a huge luxury complex on the country's Caspian coast.
"Her private, one-off fee rate is US$1.5 million non-negotiable, plus private jet and hotel for her and her entourage," a source told Radar Online.