A.J.
You're right, it will be hard at this age at first, but she, like any child, can do it!!!!
Make it a celebration during the day, that now she's big and has her own cute room and bed-special sheets, good pillow, animal friends, books near by. Go to her bed a lot during the day (not at night) for books or snacks and naps etc to get her used to liking her bed. I would also start making sure she's really tired at night in advance with a little extra active playing during the day, slightly shorter nap if she takes one, and be sure she eats a lot-no sugar-so she's nice and full. Nice night routine.
Then, when the time comes, stand firm. She must sleep alone. If you give in to crying, she will learn to cry even longer to get comfort, or moved to you bed, or whatever. If you're gonna do it, DO IT! Don't think of the crying in the moment so much as the importance of having her secure and happy sleeping alone when the process is done. It almost never takes longer than a week if you don't give in. Sometimes only a night or two. Don't bother trying to get her to sleep with others, etc, she needs to be secure sleeping herself no matter where she is. Our family travels a lot, and the fact that we got both kids sleeping alone from the start has been a godsend, because whatever our arrangements are, they like to go off on their own and sleep.
You can do it! Hang in there!