It's her hot bod.
Inna - Amazing
"Elena Alexandra Apostoleanu, best known as Inna, is a Romanian dance singer. In November 12, 2008, she released her debut single 'Hot', which was produced by Play & Win, a Romanian dance music trio and one of the leading music producers in Romania." -- Wikipedia.com
If you love Inna, then you might like Catrinel Menghia.
Via Jeremiah