I am Alice: Body Swap in Wonderland (2012)

Blurb:
I Am Alice: Body Swap in Wonderland is a new ongoing manga series that recasts the tale of Alice in Wonderland in a uniquely hilarious light: Alice switches bodies with a boy, and together, they must journey on a madcap quest through Wonderland.

When Makoto, an unsuspecting Japanese teen, pulls a copy of "Alice in Wonderland" off a library bookshelf, his world will never be the same―literally. Suddenly, he is transported into the magical world of Wonderland, and even more shockingly, he is now stuck in Alice’s body!

To make matters curiouser, the real Alice is stuck in Makoto’s body, and neither of them are happy about the situation. There’s only one way to reverse the body swap and return Makoto home, but it won’t be easy: They must journey together to Heart’s Castle and defeat the King of Hearts.

Source: www.anisearch.com/manga/12787