Her 20- pounds weight loss after winning the American Idol in 2005 startles everybody. This year, despite being pregnant, songstress Carrie Underwood is intent in keeping her vegan lifestyle and in keeping her fitness routine with some modifications to accommodate her growing baby bump.

Reports on The Examiner stated that the singer makes sure she did her daily workouts even with the nauseous and lazy feeling attributed to morning sickness and lists down what she has eaten that day in a food journal.

Her fitness coach, Erin Oprea, tells her side of the story saying that the 31-year old mom-to-be sticks to her daily routine and is "a champ" in doing it with a series of weight lifting, cardio sessions on the punching bag and stretching.

She is also a certified vegan and is proud to have kept the practice all these years further saying that she upholds "practical veganism" especially while on vacation when she cannot prepare her own food.

When asked about her ideology, this is what the superstar told Women's Health as quoted by The Examiner, ""If I order something on a menu and it has a sprinkling of cheese on top, I'm not going to send it back. I've been vegetarian - no fish, no chicken, no-meat vegetarian - for about a decade now. The vegan thing is something I try to do my best on."

She shares a story of her a vacation in Italy when following a strict vegan diet is very challenging. Further, she said that she can best practice being a vegan at home.

"I'm a vegan at home. It's when I go other places that it can be a challenge, especially when you don't exactly know what you're ordering. It doesn't say that there's cheese on the menu. But like I said, I'm a practical vegan."

Meanwhile, the diva is busy and excited about her pregnancy and is seen shopping with her hockey player husband, Mike Fisher in Babies R Us with the singer saying that shopping for her coming baby is 'overwhelming'.

"I just don't want to get the wrong things, you know," the chart-topping singer said in an interview with CMT Hot 20 Countdown and as quoted by E! Online.