What is the dress code in Peru?

Hi,
I was wondering if anyone has travelled to Peru and could offer some suggestions on what to pack - i'm going there in May and I'd hate to offend anyone there.
Is there a dress code for entering churches, or going to the market or visiting the ruins? (ie. shoulders to be covered, long pants or skirt required).

Thanks a bunch
You can dress casually and not too revealing and youll be fine.The more skin you show the more likely youll recieve unwanted attention from men and stares from women.wear skirts to your knees atleast and avoid see through stuff or too tight.

There's a very good saying that goes 'bring twice as much money and half as many clothes as you think you'll need'!

The key to packing for a trip to Peru is to pack for a variety of conditions while keeping the weight to a minimum. Easier said than done when you have to deal with the intense heat of the high altitude, the cold mountain nights spent camping on the Inca Trail and the heat and humidity of the Amazon Basin. The best way to deal with these extremes is to dress using several layers rather than one thick jumper. If you forget something, don't despair since most things can be bought in most Peruvian cities frequently visited by tourists including excellent and cheap alpaca jumpers.

Below you'll find a suggested packing list:

1. Backpack (65 litres should be quite sufficient).

2. Day pack

3. Comfortable walking boots with good ankle support.

4. Clothes

2 pairs long trousers (lightweight)

2 T-shirts

1 short-sleeved shirt

1 long-sleeved shirt

1 pair shorts

Underwear and socks (thermal underwear is highly recommended, being light, warm and makes good nightwear on cold nights).

5. Fleece jacket

6. Hat or cap to protect from the sun.

7. Towel plus washing items.

8. Sun cream, lip salve, sun glasses.

9. Alarm clock, torch, knife

10. Basic first aid kit.

11. Insect repellent.

12. Money belt.

13 Camera + film (film can easily be bought in Peru and is of excellent quality).

Optional extras include:-

14. Sleeping bag (3 season)- but can be rented in Cusco for the Inca Trail if you don't have one.

15. Plastic sandals - useful for in the shower.

16. Several good novels, pack of cards.

17. Binoculars

18. Water bottle (mineral water can be bought throughout Peru)

19. Water sterilizing tablets for trekking including the Inca Trail. (Micropur tablets can be bought in Cusco and are very efficient).

Have a wonderful trip!