Pop icon says she will be 'honoured to introduce her fellow freedom fighters'
The event will take place on Sunday night (January 26) in Los Angeles
Reports say singer will perform duet at event
The 'MDNA' singer uploaded an image of her son boxing along with the caption '#disnigga'
"No one was drinking we were just having fun!" she tells fans
Singer beats Lady Gaga to take first place in money-makers list
Singer is no longer welcome in any of The Alamo Drafthouse cinemas after New York Film Festival incident
Singer also reveals she was burgled three times in a year when she first moved to New York
Pop star appeared at New York's Gagosian Gallery to mark the launch of her Art for Freedom campaign
The film was released yesterday and is available via BitTorrent