i need to lose 2 and 1/2 stone in 11 weeks for my holiday!

(I found these, with a little bit of searching:)
Weight Loss Spells
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copyright Lady Bridget 1990
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This is a very simple weight loss spell, which I wrote in 1990 and have used over the years as an aid to diet and exercise. Remember that magick never relieves you of your responsibility to continue to do all you can on the physical plane to achieve your goals. If you think you are a powerful enough witch that you can just light a candle to take the weight off while you continue to eat chocolate ice cream for dessert every night, then I really want to meet you!
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Simple Weight Loss Spell
Timimg: Waning Moon (start just after Full Moon)
Preparation: Using an athame (or another sharp item that you have ritually blessed) mark a black candle into 14 equal parts (13 rings). Mark each section with number fives (5).
On the night after the Full Moon, burn the candle down to the first mark while meditating, and chanting the following:
"As this candle burns, so my fat burns.
As this candle decreases, so my weight decreases.
I have complete control over my weight.
My body is truly perfect in every way.
I now weigh a perfect __(insert desired goal)___ pounds.
Every day I am slimmer and healthier.
I am as perfect as the Goddess within me.
Thank you, Goddess, for your help.
This is my will, so mote it be."
Do this nightly, burning the candle down to the next mark, until the night of the New Moon, when the candle should be allowed to burn out. It is also helpful to picture your body's fat cells burning off and to feel your increased metabolism and energy. Your body may feel warm and tingly. As the candle goes down, so your weight goes down. You will lose 5-10 pounds over the two weeks. This spell can be done every month, or as needed.
Points to Remember: This is the affirmation that I wrote for myself, you are free to change it in any way to suit yourself. Rhyming works well, but I wrote this before I was very good at rhyming everything, and I have continued to use it in the original form simply because I like it that way. Always bear in mind that you must see yourself as having already accomplished your goal in the present moment. Also remember that you need to keep wording things as positive, your subconscious mind really hates to "lose" anything. The word "Goddess" can be substituted for whatever God or Goddess you are working with on this, but I would definitely ask for Divine help.
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WEIGHT LOSS SPELL BY SELLING POUNDS
All you have to do is get two people together, and have the
one who wants to buy the pounds pay the person selling them.
Then they shake hands and the deal is done.
It usually takes a week or so, and ten pounds is about all
you can transfer at a time.
Best Wishes,
John M. Hansen
?? 1999 John M. Hansen (jmhansen@erols.com)
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WEIGHT LOSS SPELL BY TRANSFER TO AN EGG
OMG! Get out! And to think of all the time and energy I've
wasted on Slim-Fast!
No actually, I've found result by using an egg to transfer
the weight. I take a bath with pungent herbs like
eucalyptus and the like and then rub a raw egg in the shell
--cat all over my body while chanting "take my fat" over
and over. Then in the middle of the night I break it at the
crossroads and then walk away without looking back. My
theory is for the weight to be distribute among the
passers-by.
I also carry a mojo Cat fixed up for me and it has worked
wonders. I sheepishly admit that at my heaviest I weighed
in at 300lbs. I now weigh 234 and It's been less than a
year since I got the mojo and done the egg-weight-transfer.
Credit is also due to the Atkin's Diet. I can eat like a
horse and still lose weight! Currently I am nibbling on a
Burger-King Whopper with Heavy Lettuce, pickles, and mayo,
minus the bread. Ummm...good stuff.
If anyone would like to try the above please make sure to
break the egg at a crossroads you will never visit again.
You definitely don't want the flab back, and trust me it's
your flab in the first place and it naturally wants to come
back to you. I messed up my first try real good and dropped
the egg on the ground and splattered egg all over my jeans.
I gained 6 pounds that week.
Jason
?? 1999 Jason Gammon (HoodWinkedBrand@aol.com)

Unfortunately, no :-) take it from this pagan. You'll just have to watch what you eat and exercize.

There is no spell. You go out there and bust your ***. The weight will then come off.

there is two,one is called diet the other exercise.

not that i know of, be happy with what you weigh now.