Rod Stewart spawned socialite Kimberly Stewart was photographed hanging out with Lindsay Lohan’s ex-boyfriend, and her own former flame, Calum Best. Calum is rumored to be desperately trying to rekindle his recent romance with rehabbed actress Lindsay Lohan-even buying the ‘Herbie Reloaded’ star a lavish diamond necklace for her twenty-first birthday last week. Kimbo, on the other hand, has been romantically linked to forty-something rocker Tommy Lee.