Chrissy Teigen didn't think motherhood would be so "tough".

Chrissy Teigen and John Legend

Chrissy Teigen and John Legend

The 31-year-old model - who has eight-month-old daughter Luna with her husband John Legend - has hinted she underestimated how difficult parenting would be and has admitted being a full-time mother is very demanding.

Speaking to Elle Australia about her experience as a first-time parent, the brunette beauty said: "I didn't know how tough it would be. [It is] all-encompassing."

However, the 'Lip Sync Battle' co-host - who married the 'All of Me' hitmaker in 2013 - has admitted she has no qualms about discussing certain topics because she "loves" being "outspoken".

She said: "I love having every right to be as outspoken as I am, as any man would be."

Although Chrissy likes to voice her opinion the star believes men are "scared" of feminists who speak their minds.

She explained: "I think some men are scared of feminists because they think they're trying to prevail in a way, whereas I'm like, 'That's not what equality is.'

Meanwhile, the chart-topping singer has revealed him and his spouse plan on expanding their brood in the future and hope to have "three or four" children.

Speaking previously about their family plans, he said: "It's a beautiful thing. We want to have a few more hopefully. Three or four. We'll play it by ear though."

The 37-year-old musician and Chrissy struggled with infertility for several years before they eventually turned their attention to IVF in order to conceive.

John said their doctor was never able to give them an answer as to why it "didn't work out naturally", but he explained they did what they had to do as a couple in order to have a baby.

John explained: "We figured eventually we'd have to go into the doctor and see why it wasn't happening naturally.

"You know, sometimes it's just harder for some people than for others.

"He's never really told us that there was something specific that he could identify was the reason why it just didn't work out naturally. We did what we had to do."

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