Chrissy Teigen reveals postpartum depression battle

Chrissy Teigen has revealed that she has battled postpartum depression since the birth of her daughter last year.

She and her husband, singer-songwriter John Legend, welcomed a baby girl, Luna, in April.

The former Sports Illustrated swimsuit cover model, cookbook author and social media favourite writes in an essay for Glamour magazine that she has been "unhappy" for much of the last year and discovered she was suffering from postpartum depression in December.

Teigen writes that she had difficulty after returning to work as a co-host of the syndicated Lip Sync Battle.

She says she is now taking an antidepressant for the depression and anxiety and is also in therapy.

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"[I] just didn't think it could happen to me. I have a great life. I have all the help I could need: John, my mother (who lives with us), a nanny. But postpartum does not discriminate. I couldn't control it. And that's part of the reason it took me so long to speak up: I felt selfish, icky, and weird saying aloud that I'm struggling. Sometimes I still do," she writes.

Teigen says she's opening up now because she wants people to know postpartum depression "can happen to anybody."