Chrissy Teigen is looking forward to ''barfing four times a day''.

The 'Sports Illustrated' model is expecting her first child with husband John Legend and is so excited that she isn't worried about suffering from morning sickness.

She shared on Twitter: ''I am so excited, I could barf 4-5 times a day.

''I have come to realize that at some point in the day, I will order and consume a pizza so it might as well be in the morning (sic)''

Meanwhile, when announcing their happy news, the 29-year-old star admitted she is looking forward to the ''belly touching'' too.

She wrote: ''John and I are so happy to announce that we are pregnant. As many of you know, we've been trying to have a baby for a while now. It hasn't been easy, but we kept trying because we can't wait to bring our first child into the world and grow our family.

''We're so excited that it's finally happening. Thank you for all your love and well wishes. I look forward to all the belly touching! Xx (sic)''

Chrissy previously opened up about the heartbreak she suffered as the pair struggled to conceive a child.

She said: ''John and I were having trouble. We would have had kids five, six years ago if it had happened. But my gosh, it's been a process.''