Magnetic and geometric control of spin textures in the itinerant kagome magnet <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Fe</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mi>Sn</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>

Magnetic materials with competing magnetocrystalline anisotropy and dipolar energies can develop a wide range of domain patterns, including classical stripe domains, branching, topologically trivial nontrivial (skyrmionic) bubbles. We image the magnetic pattern ${\mathrm{Fe}}_{3}{\mathrm{Sn}}_{2}$ by force microscopy study its evolution due to geometrical confinement, fields, their combination. In lamellae thinner than 3 $\ensuremath{\mu}\mathrm{m}$, we observe domains whose size scales square root lamella thickness, exhibiting Kittel scaling. fields turn these stripes into highly disordered bubble lattice. Complementary micromagnetic simulations quantitatively capture field thickness dependence reveal strong reconstructions patterns between surface core lamellae, identify observed bubbles as skyrmionic Our results imply that confinement together interactions provide path fine-tune stabilize different types spin structures in centrosymmetric magnets.