'Bar's comments about Will being so handsome raised several red flags for Kate,' a source spilled to Star.
'Kate wanted to know what went on behind closed doors to make Bar say that.'
The insider adds to the US publication, 'It's hard for Kate. She's juggling three kids while her husband is off meeting supermodels!'
The royal family has not responded to Star's claims.
What to know what REALLY happened at the royal christening? Listen to this weeks New Idea Royals podcast.