Complex sentence: Lana returns to Smallville (her character only appeared in five episodes in Season Eight) to attend Chloe and Jimmy wedding, and also to acquires a special suit developed by Lex Luthor, giving her superpowers matching Clark's.
Split into simpler sentences: Lana returns to Smallville (her character only appeared in five episodes in Season Eight) to attend Chloe and Jimmy wedding. She also acquires a special suit developed by Lex Luthor, giving her superpowers matching Clark's.