Aaron Korsh, creator of "Suits," had revealed on Twitter that Mike Ross will be seen wearing his first three-piece suit in the premiere episode of "Suits" Season 4. USA Network has released the premiere episode trailer and Mike can be seen looking dapper in his three-piece suit.

 [Youtube/SuitsonUSA]

The first trailer of the premiere episode, which is titled "One, Two, Three, Go," does not feature Mike's new office or his new colleagues. In addition to Mike, the old cast Harvey, Donna and Rachel feature in this trailer clip.

Mike can be seen in Harvey's office and he is there to tell his former boss that he is done "playing in the kitty pool." And on his way out, Mike gets to hear Donna's mocking comment, "our little boy is all growns up." It is "the student takes on the master" time in the new season of "Suits." Harvey calls it the street-fight and warns that there will be only one man standing when it's over.

As previously reported, there will be a dynamic change in Mike, who will be working as an investment banker in Season 4, and Harvey's relationship. These two are heading towards a major conflict in the upcoming season, as they find themselves standing against each other. "Mike and Harvey adjust to the new arrangement, butting heads over strategy," according to the official synopsis of the episode.

In addition to the three-piece suit, investment banker Mike will be getting a new executive secretary called Amy. She will be introduced in the premiere episode. Amy will be like Donna, "bright" and "quick-witted." She will develop a nearly instant rapport with Mike.

Amy will be seen aiding Mike in "capacities both personal and professional, ensuring that even in tough times he keeps his eye on the ball," according to The Hollywood Reporter. Melanie Papalia is playing the role of Amy. She has a recurring role.

"Suits" Season 4 premieres on June 11, 2014.