Is Miranda Kerr pregnant?

Food baby or real baby?

All eyes were on Miranda Kerr when she arrived at the Saint Laurent fashion event in LA recently, as she made no attempt to hide what her rounder-looking belly!

Miranda Kerr was spotted with a rounder tummy at the Saint Laurent show. Photo: Getty

The Aussie model, who's mum to five-year-old Flynn with her ex Orlando Bloom, has been dating billionaire Snapchat CEO Evan Spiegel, 24, since July, and stood side-on to show off her larger-looking belly in a skin-tight dress.

But we hear Miranda's red carpet reveal was more than a public celebration of baby number two.... Insiders say she's retaliating, filled with jealousy over her ex-hubby Orlando carrying on a public romance with Katy Perry - and even introducing her to their son Flynn!

Miranda Kerr with billionaire boyfriend Evan Spiegel. Photo: Getty

"[Miranda] tore into Orly for being so disrespectful and inconsiderate, and has told him he can't pull that type of stunt every again," a friend tells OK! magazine.

"She was having a tough time over this romance already, so the sight of them plating happy families really sent her over the edge."

"She's been plotting to have a second baby ever since she found out Orlando and Katy were getting serious."

Katy Perry and Orlando Bloom. Photo: Getty

For more on this story, pick up this week's copy of FAMOUS, out now.