The singer told \"Good Morning America\" in June that motherhood is \"a blessing\" for her. \"For me, I think they saved me, so I'm in heaven,\" she said.

She also admitted that the adoptions came with challenges.

\"They both suffered a lot and I've been able to get them the help -- I have the resources to get them the help that they needed for their early trauma,\" she said. \"It's taken a year and we've had our ups and downs, but we've never been in a better place than today, in fact.\"

During the singer's interview with Vogue Australia, she also revealed she is considering growing her family even more.

\"I have obviously such an overflow of love that I could definitely see myself doing it again, but not for a while,\" she said on motherhood.

\"The next thing I’m planning to do is foster actual infants,\" she continued. \"Maybe [their mother] is drug-addicted and then I could help look after them until, you know, their mum can get back on the wagon or an adoptive home is found. If I can do that then I think I’ll feel like I’m superhuman.\"

Video: Sia dishes on motherhood and her friendship with Maddie Ziegler

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