Kristin Cavallari comforted by her newborn after her brother's death

Kristin Cavallari cuddles her daughter, Saylor. (Screengrab: Instagram/Kristin Cavallari)
Kristin Cavallari cuddles her daughter, Saylor. (Screengrab: Instagram/Kristin Cavallari)

Los Angeles - Kristin Cavallari's newborn daughter is helping her to cope with her brother's recent death.

Michael Cavallari - the 30-year-old brother of the Hills star - was found dead in Utah last week after having been missing for almost a fortnight and devastated Kristin, 28, says baby Saylor is providing some solace.

She wrote on Instagram: "My little angel, Saylor. She has been my light throughout this whole thing and has given me so much strength. Thank you baby girl for coming when u did."

Kristin and husband Jay Cutler - who also have sons Camden, three, and Jaxon, 17 months, together - welcomed Saylor last month.

Meanwhile, Michael is suspected to have died from cold temperatures with law enforcement officers reportedly revealing that he most likely passed away after he was left exposed to the elements.

There were no signs of trauma and police didn't discover drugs or alcohol where his body was found, in Grand County, Utah, according to TMZ.

However, the Grand County Sheriff's Office has still to officially confirm the cause of death.

In a statement the office said: "At approximately 10:30 search crews located remains believed to be that of Michael Cavallari.

"At this time, the body is being transported to the Office of the Utah Medical Examiner for positive identification and to determine the cause of death.

"The search crews were searching the Salt Wash area, near exit 175 on I-70 in Grand County. The terrain where the body was located is a steep and very rocky area."