Hey Tiffany! There are a few different apps you can use depending on your blog platform. Try http://twitterfeed.com/ - seems to be the most commonly used. There are also some WordPress plugins that do this if your blog is on WordPress.
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Toxic Free Blog - by Brittany Glynn
Brittany is a director of the Toxic Free Foundation and created the first ever Toxic Free Certification Program. Weekly, Brittany publishes the Toxic Free Blog and provides coaching to over 10,000 families in the United States alone. She is the author of a Toxic Free educational series and co-author of several Toxic Free learning programs. Brittany is also an award winning author.