While there, he engages in a Fred Astaire dance number with a pair of gloves and a pack of cards. He also dances with Garbo as the Queen of Hearts, until the cards chase him out of their bizarre world.
Mickey Mouse meets the Queen
Garbo appears in a pair of cards and dances with Mickey. Naturally, she is the Queen of Hearts card.
Queen of Hearts aka GG, dancing with Mickey
Mickey flirts with his Queen
When the King of Hearts card notices Mickey and Queen Garbo dancing, he hops on a bicycle to meet them. The king is so angry and jealous that he tosses Garbo and both sides of him slap Mickey!
The angry King
King slaps Mickey
Thru the Mirror is presented on the “Mickey Mouse in Living Color” DVD.
Source: IMDB and Wikipedia