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In her upcoming book "Off the Sidelines ," Sen. Kirsten Gillibrand, D-N.Y., reveals she was the subject of insensitive comments about her weight from male colleagues in the House and Senate.

According to an excerpt posted by PEOPLE magazine, Gillibrand details an incident in her book where a male colleague saw her in the gym said, "Good thing you're working out, because you wouldn't want to get porky!" According to the Huffington Post , Gillibrand responded, ""Thanks, a-hole."

Gillibrand also discussed an episode where a senator commented on her weight after she lost 50 pounds. The senator grabbed her stomach and said, "Don't lose too much weight now. I like my girls chubby!"

The New York senator has talked about struggling with her weight after giving birth to her sons, saying she's fluctuated between a size 6 and size 16. In her book, Gillibrand brushes off the comments from her male colleagues.

"It was all statements that were being made by men who were well into their 60s, 70s or 80s," she writes. "They had no clue that those are inappropriate things to say to a pregnant woman or a woman who just had a baby or to women in general."