Ex-Spice Girl Victoria Beckham is threatening to sue jeans company Rock + Republic for up to US$100m, according to press reports.

Beckham, also the wife of top footballer David, is said to be at odds with the firm after a range she designed for them was much more profitable than expected but she was not rewarded accordingly.

Her legal team are said to be currently deciding whether to pursue the case.

It has already been confirmed that Beckham will stop working with the company, reportedly to work on her own denim line.