Warning For Miranda! Mother Of 'Cheater' Husband's Ex-Fiancee Hopes Singer Got A Prenup

Miranda Lambert rushed down the aisle in a secret ceremony with her boyfriend of just two months, NYC cop Brendan McLoughlin, in January — and now, in an exclusive interview with RadarOnline.com, the mother of his jilted ex-fiancee has a warning for the impulsive country singer.

"I hope she was smart enough to get a prenup," Carol Bruno, the mother of McLoughlin's former bride-to-be Jackie Bruno, told RadarOnline.com exclusively.

Superstar Lambert, 35, has a reported net worth of $40 million, while McLoughlin was a wannabe model-turned-police officer based in Staten Island, New York. RadarOnline.com has confirmed the 27-year-old is still employed as a cop in midtown Manhattan.

Bruno further dissed Lambert, who infamously dated rocker Evan Felker last year while he was still married to now ex-wife Staci Nelson.

"She doesn't have the best reputation either — maybe they're perfect for each other!" she said.

The protective mom claimed "cheater" McLoughlin got another woman pregnant while engaged to her daughter last year.

"Jackie was in Sweden playing professional soccer, got injured and came home, and the other woman contacted her. She broke the news to her," Bruno previously told RadarOnline.com.

But now, Bruno told RadarOnline.com her daughter's ex begged for her back after the cheating scandal.

"He cried to her, begged her to stay with him," she said.

But the jilted fiancée allegedly dumped McLoughlin — and he moved onto Lambert.

As RadarOnline.com exclusively reported, McLoughlin met Lambert on the set of Good Morning America in New York on November 2 — three days before he welcomed a baby with his alleged mistress!

We pay for juicy info! Do you have a story for RadarOnline.com? Email us at tips@radaronline.com, or call us at (866) ON-RADAR (667-2327) any time, day or night.