Yes, Gundam are mobile suits. They're mecha! And sometimes, they are cute doe-eyed girls.
Since 1982, MS Shojo (MS Girl) has been published in monthly publication Gundam Ace. Familiar with most anyone who follows Gundam, MS Shojo was created by veteran Gundam mecha designer Mika Akitaka and pretty much spawned the entire young-girls-as-mecha subgenre.
Akitaka's shojo work is getting published in a new book, Mobile Suit Girl Akitaka Mika MS Shojo Art Works. Have a look.
MS少女画集「MOBILE SUIT GIRL 明貴美加MS少女アートワークス」発売 [AkibaOS NSFW]