United Kingdom, March 7 -- Gwyneth Paltrow used to have a "difficult relationship" with her stepchildren.

The 51-year-old actress has Apple, 19, and Moses, 17, with ex-husband Chris Martin but became a stepmother to Brody, 17, and 20-year-old Isabella when she married TV producer Brad Falchuk in 2018 but admitted that she even though she now thinks of them as her own, she had to "learn" a lot in the early days.

Speaking at the Visionary Women's International Women's Day Summit, she said: "Yeah, it's a b****, right, guys? No, I actually, I really like to talk about this because it's one of my biggest learnings as a human being. And my area of growth personally came from the initial difficult relationship I had with my stepkids and now th...