"For my 21st she gave me one of her albums, 21, and said, "I did some pretty cool stuff when I was 21, good luck, '" he revealed to the United Kingdom radio show".
Styles also stated that the "Send My Love (To Your New Lover)" singer helped him, as she gave him advise for his solo album.
'It gave me a chance to completely step away from it for a bit and have a real break.
'I'd rather take the gunge, ' Harry confessed when Nick asked 'Did you think we'd do something weird like bring all your exes in?' "And I think for me, I just wanted to kind of, more so than be different from that, I just wanted to get out of somewhere where I had all my friends and where I'd want to go for dinner at a certain time".
Meanwhile, although Harry hasn't yet announced a release date for his debut solo album, the singer has already had mixed reviews from his family.
Fans have rushed to praise former One Direction star Harry Styles' new single, Sign Of The Times.
The first? Well, me crying over this song because I'm nothing if not a secret One Direction fan who cries in the shower to "Little Things" still to this day.
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A "holding hands" picket is planned in Cape Town, while other groups are expected to march in coastal city of Durban. In Cape Town, motorcyclists with South African flags led a rally.
In total, Styles wrote about 70 songs for the album. Maybe I just hide them in limited edition albums, like golden tickets.
Harry will be releasing his new single, Sign Of The Times, tomorrow on April 6.
Styles also gushed about his forthcoming record, naturally, which he's happy to come out of "hibernation" for: "We just wanted to make what we wanted to listen to, and that has been the most fun part for me about making the whole album".
He said: "I think the thing that's really cool about it is, you know, we all went through that together and it's like you know, something that we'll always have in common".
"I was like... geez", Harry said.
"I wonder if her future boyfriends are like sceptical about splitting up with her if they want to", Louis mused.