Tony Stark and Emma Frost throw a wedding in an X-Men #26 and Invincible Iron Man #10 crossover even
Tony Stark and Emma Frost Tie the Knot in 'X-Men'/'Invincible Iron Man' Crossover Event
https://www.marvel.com/articles/comics/tony-stark-emma-frost-wedding-x-men-invincible-iron-man-crossover