All the cool kids are on Twitter. No, seriously, even your mom has one by now, don't laugh, she's cool too -- in her own right. If you aren't tweeting about the creamer in your coffee or how much you love Ellen DeGeneres or American Idol yet, you are totally missing out. The juicy celebrity Twitter feuds alone are reason enough to join. Like, did you see what Justin Gaston tweeted about Miley Cyrus after they broke up? I digress, but really, this virtual water cooler doesn't only stream celebrity gossip or boring personal musings (turns out people do care about your new gardening rake); it actually can be a very useful tool for getting important information. And by important information, we of course mean all things beauty related.

All kidding aside, Twitter is a great source for getting up-to-the-minute, scratch that, up-to-the-second makeup tips, skin care advice, insider hair care information, links to free beauty samples and deals, and so much more.

For those that have a mixed passion for celebrities and beauty news, you are not alone. Follow these 5 celebs for a nice mixed bag of 411.

1. Denise Richards dishes on her fab facials and workout routines.
2. Joan Rivers talks smack about celeb style and makeup mishaps (hopefully she includes her own from time to time).
3. Heidi Montag provides hours of endless snickering with her misspelled words and details of her skin care regimen.
4. Lady Gaga tweets about wigs, makeup and details of her shows.
5. Sarah Silverman. So we'll admit she doesn't tweet about beauty often, but this chick is just plain funny.

And now � on to the tweets that offer up serious beauty banter. Whether you're just getting your Twitter bird feathers wet for the first time or are a 30-tweets-a-dayer, you'll want to follow these beauty tweeters -- stat.