Madonna claims her spiritual age is 36.

The 'Give It 2 Me' singer - who turns 50 tomorrow (08/16/08) - has been told
by Kabbalah priests she is 14 years younger than her true birth age.

The star has since banned guests attending her celebrations from referring
to her being 50, according to Britain's Daily Mirror newspaper.

She has also issued instructions informing her guests not to bring any
cards, cakes or presents which state her true age.

Meanwhile, it has been revealed that Justin Timberlake - who teamed up with
Madonna on the smash hit track '4 Minutes' earlier this year - was unsure
what to buy the queen of pop for her special day, and so has settled for
golfing vouchers.

Earlier this week, it was reported Madonna was considering delaying her
birthday celebrations after twisting her ankle.

The singer was set to throw a lavish party at her country estate in
Wiltshire, England, but suffered the injury while rehearsing for her
upcoming world tour.

A source said: "Plans are very hush-hush but Madonna is definitely going to
celebrate in style.

"Unfortunately, not everything has gone as expected as she's had many other
things on her mind. On top of all the stress, she twisted her ankle over the
weekend.

"She views this as a sign she should postpone the birthday bash and play it
by ear instead."