LeAnn Rimes' bikini pics fuel breast job rumours

LeAnn Rimes's latest pics from her Mexican vacation have fuelled rumours she has gone under the knife.

The singer's sexy bikini shots from her trip to Cabo San Lucas last week compared with old photos has prompted buzz that she underwent a breast augmentation in the last year or two, reports the New York Daily News.

"She recently got a breast job," UsMagazine.com quoted a source Tuesday.

"She's always, always been insecure about her size.

"She was a small A-cup. She often talked about wanting to get implants. She'd say, 'I just want a little bit so they're proportionate to my body,'" the source said.

The source even alleged that Rimes used the same doctor and got the same new cup size as Cibrian's ex-wife, Brandi Glanville.

Rimes's rep didn't comment on the report.

However the vacation, a holiday getaway with new fiance Eddie Cibrian, helped end speculation that the 28-year-old was pregnant.

The singer, showing off her washboard abs, was photographed taking in alcoholic beverages.