Molly Sims has given herself gastritis by eating too many citrus fruits.

She said: "With my first pregnancy it was apples, but this time around I've had so many mandarin oranges and grapefruits to the point where I got gastritis. It's really painful, but I can't stop! Normally I don't even drink OJ, but this morning I drank it straight from the jug. It's so weird."

The former Sports Illustrated model, who is expecting a baby girl, says she has gained less weight this time around after putting on 80 pounds while pregnant with son Brooks, two.

She told The Bump magazine: "With baby number two, I've only gained about half of that and I've felt much more energetic."

But the blonde beauty admits she has done a lot less exercise.

She explained: "I did a lot less cardio and a lot more Pilates. I still did Tracy Anderson and spinning, but I took it much easier. My body just didn't feel like I needed it, especially in the middle months, and I didn't want to push it as hard. Some days you have energy, and some days you feel like you've been hit by a bus. It's so important to really listen to what your body is telling you and go with it."