![Kristin Cavallari sports ‘M’ necklace as Mark Estes romance heats up](https://pvnew.com/skin/st08skin/image/lazy.gif)
Kristin Cavallari is keeping her new man close to her heart.
“The Hills” alum posted some selfies via Instagram on Friday, which showed her paying tribute to her beau, 24-year-old Mark Estes, by wearing a gold necklace that featured an initial “M” pendant.
She captioned the selfies, which had her rocking a black open-front top, with a simple “M.”
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Estes showed the 37-year-old star some love in the comments section, flirtatiously writing, “Smash.”
Cavallari’s confidence-exuding selfies were posted less than two weeks after she debuted her relationship with the athlete by sharing a snapshot with him on Instagram. “He makes me happy