"So Big" is a song performed by British Virgin Islands recording artist Iyaz. It is the third single released from his album titled Replay and follows his singles "Replay" and "Solo", both of which reached the top 3 of the UK Singles Chart. It released as an EP in the U.S. on 21 June 2010 with a single release in the UK on September 10, 2010. "So Big" is written and produced by J. R. Rotem. Claude Kelly is the additional co-writer and also provides vocal production.
The music video for "So Big" premiered on Iyaz's MySpace page on 5 August 2010 where it has received over 82,000 views. On 11 August 2010 it was added to his official YouTube account where it has currently amassed over 34 million views. The video's girl is actress Francia Raisa.