May 4 (Reuters) - Jessica Alba’s consumer goods company Honest Co was valued at $1.9 billion in its Nasdaq debut, after its shares opened 33% above their offer price on Wednesday. The company’s stock opened at $21.22 per share, compared to the offer price of $16 per share. (Reporting by Niket Nishant in Bengaluru; Editing by Ramakrishnan M.) Our Standards: The Thomson Reuters Trust Principles.