Despite being widely regarded as one of the world's most beautiful women, the 24-year-old-old singer admits she has insecurities about her figure like all ladies but she has learnt to love her shape and be proud of herself.
During an interview on UK TV show 'Daybreak', she said: 'I mean I don't think anybody really is 100 per cent. I mean you get comfortable with the fact that that's your body and that is what it is - that I had to learn. (Some days) I'm like, 'OK, whatever, I feel fat today,' but what can you really do about it?
Rihanna has made the switch from music to acting and appears in upcoming blockbuster 'Battleship' - which also stars Taylor Kitsch and Alexander Skarsgard.
The 'You Da One' hitmaker really enjoyed shooting the film but admits she was nervous before starting because of her lack of experience.
Speaking about the movie - in which she plays weapons specialist Cora Raikes - she said: 'It was nerve-racking really, scary to go into something so new and not really knowing what to expect or what to do. It was a learning experience so at the same time I had to pull off the part, but it was also brand new for me. But I just had to focus and get it done, there was no thinking about it ... I'm very competitive with myself and I take that through my career. I want to get better every time - the next step always has to be upwards. I guess I'm relentless in that way when it comes to my work. I don't ever give up or I feel guilty stopping for a little bit, but sometimes it's good to stop.'