Kristin Cavallari Wears Necklace Referencing New Boyfriend Mark Estes

Kristin Cavallari, 37, wears 'M' necklace in sweet tribute to her new boyfriend Mark Estes, 24, as she rocks black lace top during sultry selfies

Is Kristin Cavallari Showing Love to BF Mark Estes Through Her Jewelry?

Kristin Cavallari's Ex Trolls Himself to Support Her New Age-Gap Romance