I hear that foods rich in Omega 3's like Salmon and healthy fats like Avocado are the best!

goji berries

have abundance of Vitamin c, helps with immune system, liver function and memory, 

Hope that helps

Steam yourself. It's not only good for the skin but also reduces stress. Drink 8 glass of water every day for a good skin :)))))

Read more: http://www.lasscosmetics.com/beauty_tips_natural/skin_care_articles.php

Take multi vitamins, drink plenty of water and make sure to rest

salmon and other foods with omega 3 fatty acids (peanuts, soy, etc) are amazing for your hair and skin and nails. i started to take omega 3 supplements about 2 months ago and now my nails are so STRONG, its annoying! my hair has grown out faster. as far as my skin, it does make a difference because i break out less, but i still break out just because I AM ACNE PRONE.

fish oil is amazing! take it!

Thanks for all the great tips everyone. I can't wait to try them out.

I used to take Spectrum Flaxseed Oil and it had amazing results on my skin.  I plan to start it up again after maternity.  Fish oils are rich in DHA & EPA which is vital in brain development...my prenatal vitamins even have them.  So you can't go wrong with Fish oils or Flax oil.  But, of course with anything always consult your doctor if you're not sure.