Look out, Brangelina — Heidi Klum and Seal are catchin’ up to ya!

Sources confirm that the model-mogul is expecting her fourth child with music-man hubby and super-sperminator Seal. The couple already has two sons together, Henry Günther Ademola Dashtu Samuel, 3, and Johan Riley Fyodor Taiwo Samuel, 2 — both of whom may have the longest names EVER. Seal is also the adoptive father of Heidi’s daughter, Helene “Leni” Klum (who turns 5 next month), whom she had with Italian businessman Flavio Briatore… a man who clearly deserves the “Father of the Decade” award.

Heidi is apparently almost four months pregnant.

Four kids under the age of five… I became tired just TYPING that sentence.

Congrats, you crazy kids!