Kristin Cavallari has hinted her husband is getting a vasectomy.

Kristin Cavallari and Jay Cutler

Kristin Cavallari and Jay Cutler

The 'Hills' star has revealed she and Jay Cutler - who have children, Camden, three, Jaxon, 22 months, and four-month-old Saylor - aren't planning to have any more kids so they are both going to undergo "permanent" birth control measures.

SiriusXM radio station's 'Conversations With Maria Menounos' show, she said: "We're taking permanent measures. We'll just leave it at that."

Presenter Maria then joked that the 32-year-old American footballer might not be too keen to undergo such an operation.

But the 29-year-old reality TV star - who married Jay in 2013 - replied: "We'll see."

Kristin was recently left devastated by the death of her 30-year-old brother Michael, but admitted earlier this month that her kids are giving her the "strength" to cope following the tragedy.

Asked how she has been since Michael's death, the blonde beauty said: "I'm OK. I mean, I have good days and bad days. I've just been looking to my kids especially for strength, and focusing on them."

An autopsy revealed last month that Michael died from hypothermia after he crashed his car during extreme temperatures while passing through a rocky and rural part of southern Utah.