Kristin Cavallari Talks Romance With Mark Estes, Addresses Age Gap

Kristin Cavallari's Hot Young BF Mark Estes Says Relationship Is 'Going Great' -- And His Boyz Are Supportive!

Kristin Cavallari Shares Biggest Hang-Up in Relationship With Mark Estes, Talks Potential for Future

Kristin Cavallari Shares Pic of BF Mark Estes and Her Son Bonding