Nicki Minaj and her childhood sweetheart Kenneth "Zoo" Petty are preparing to tie the knot - but friends of Nicki are reportedly worried that she will not have him sign a prenup prior to the marriage.

"Friends are concerned that Nicki may not get a prenup before she marries Kenneth Petty and they hope she makes the right decision to protect her assets," a source close to Nicki told HollywoodLife.

"They know that Nicki is head over heels in love with Kenneth and they are worried that love may be so blind that she isn't even considering what may happen if they ever split. Nicki has a lot to lose and they fully support her following her heart and marrying him. But they just want to make sure she's being smart about it and fully thinking things through before taking the leap," the insider added.

We can all see that Nicki is truly, madly, deeply in love with Zoo, but a prenup is just smart business sense. Zoo does have her name tattooed across his neck and was even featured in the recent "MEGATRON" video, but with an estimated wealth to be over $80 million - Nicki needs to protect her assets.