Britney Spears is ''proud to be a bitch''.

The 'Toxic' hitmaker - who has sons Sean Preston, nine, and Jayden, eight, with ex-husband Kevin Federline - is confident in her opinions and happy to stand up for herself and those she loves.

She shared a poem on Instagram, which is entitled 'Bitchology' and reads: ''Being a bitch means...

''I stand up for myself and my beliefs. I stand up for those I love.

''I speak my mind, think my own thoughts or do things my way.

''I won't allow anyone to step on me. I refuse to tolerate injustice.

''It means I have the strength and courage to allow myself to be me.

''So try to stomp on me, douse my inner flame,

''Squash every ounce of beauty I hold within.

''You won't succeed.

''And if that makes me a Bitch, so be it. I embrace the title and I'm proud to be a Bitch!''

The 'Work, Bitch' singer - who is dating Charlie Ebersol - recently revealed she is in no rush to release a new album because she is busy with her sons.

She said: ''I'm gonna do [a new album] slowly but surely.

''There's a lot going on with my kids and schools and, you know, adding new sports and stuff like that. I'm gonna try to do my best to do an amazing album, but it's not my full priority right now.