Iggy Azalea opens up on her weightloss after secretly giving birth to son Onyx in May

Iggy Azalea reportedly welcomed her son, Onyx, in May this year. 

The Australian rapper has now spoken about her whopping 9kg (20lbs) weightloss over the past six months.

Iggy, 30, claimed on Twitter that she's now lighter than what she was before falling pregnant to rapper ex Playboi Carti.

'Any other moms who can’t stop dropping weight after having a baby? (Not a brag, genuinely wanna hear if you had this happen),' Iggy began the post.

The Fancy hit-maker continued: 'I don’t try/want to lose weight but it’s literally just shedding off me, is it hormonal? Should I be concerned?'

Putting her weightless into context, Iggy said: '20lbs [9kg] lighter than pre baby and counting.'