The Victoria Secret model shared the happy news with an adorable Instagram photo.
Earlier today, Lily, 32, posted a bikini selfie showing off her small baby bump and captioned the image: ‘SURPRISE’
Thousands of Lily’s 5.2 million followers commented on the photo to congratulate the model, with one excited fan writing: ‘So exciting! I always wondered if she would have another child.
‘Congrats to you and Caleb and of course Dixie who will get a sibling. Wishing you an easy pregnancy and a healthy baby! X’
The model already has a 6-year-old daughter, Dixie, with Kings of Leon singer Caleb, 36.
Earlier this year, she told Net-A-Porter magazine: ‘We all had kids at the same time and we have this bond – it’s a really nice community of model moms. I am so proud to be a mom; it’s the greatest achievement in my life without a doubt.’
She also spoke of wanting another child, adding: I definitely think the industry has become more accommodating to moms. But if people in the industry didn’t accept it, I don’t care, I would be like, “See you later!”’
Lily has also opened up about her post-baby figure and that she thinks there should be less judgement about getting back in shape after giving birth.
‘It’s been a while now since I had that moment of having to get back in shape [after giving birth], but there should be no judgement,’ she said.
‘Everybody’s journey is different. Of course, as I get older my body is changing, but I love it. I love working out and I love being healthy but I don’t judge myself so much; I don’t care if I have a six-pack any more.
‘I am inspired by all these amazing women who have fuller bodies and don’t care about cellulite. I have cellulite, too, and I have stretch marks. When I was younger I would be like, ‘Oh, my abs need to be firmer’; now I look back and I’m like, ‘You were crazy! Your abs were gorgeous!’”
Congratulations Lily and Caleb!