The costume's original coin price was 1,000, but the game makers changed it to 10 coins to help all players unlock it faster.
In the previous version, Mel was a separate character in the game and had a unique spot in the Shop. Carl, Jerry and Mel didn't have costumes like Dave did but they had hats, therefore the name used to be Mel's I-Love-Gru Hat. Now all the characters have been unified under the Wardrobe section.
I-Love-Gru Mel's old power (in the jelly lab versions) was additional time for all Power-Ups.
Its skills were enhanced upon the release of the game update v.6.4.0 (formerly 25%-200%, step 25%, currently 30%-240%, step 30%).