LOS ANGELES: Kelly Osbourne is so scared she will forget her routine on Dancing with the Stars, she stays up all night memorising it.

The reality TV star — who is currently competing in the US celebrity dance-off — is so scared she will forget her routine, she stays up all night memorising it.

The 24-year-old star wrote on her Twitter account, “I can’t sleep keep going over samba steps in my head Louis van Amstel has choreographed an amazing dance to a wicked song lady gaga ‘love game’!”

Kelly — the daughter of Black Sabbath singer Ozzy Osbourne — recently revealed she felt appearing on the show has brought out her ‘girly’ side.

She said, “You’re definitely seeing a softer side of me and it’s a side I’ve always been afraid to show because God forbid Ozzy Osbourne’s daughter be girly rather than a punk. For the last 23 years of my life I have been called moody and now I can’t stop myself from smiling.”