The 18-year-old model's cousin Alaia Baldwin - whose father is actor Stephen Baldwin - has revealed she has embraced the star's relationship with the 23-year-old rapper and the trio often hang out together and poke fun at each other.
She said: ''I've hung out with her. She's really, really awesome and she's really down to Earth.
''We all just get together and laugh and giggle and act really dumb. But that's the most fun for me.''
She added to New York Post's Page Six: ''I'm really proud of her. The past year through everything she's been doing with modelling and relationships, she's grown a lot as a person.
''So I think now she's at a really good place.
''She's 18, growing up, and it's all kind of happened, but she's taking it really well.''
Ireland and Angel are no strangers to posting selfies and the couple confirmed they were dating in June when Angel admitted she doesn't understand when people describe them as ''best friends''.
Angel said: ''I don't know if there's like some confirm or deny thing with the way relationships work in the media, but everyone just calls us best friends, best friends for life, like we're just friends hanging out. It's funny. It's rad in some ways, it sucks in others.
''If we were two guys, it'd be insane, negatively insane with the attention. With us it's all being very positive, the media are like, 'Oh, they're so cute, they're best friends.'
''An interracial gay couple ... I mean, that's just weird for America right now. We f**k and friends don't f**k. I have never f***ed one of my friends. Once I see you in that way, it doesn't happen.''