Big Sean robbed to broke in Dubai

According to reports, Rapper Big Sean was robbed blind by thieves.

Bloom Gist was told that burglars broke into his Hollywood Hills home and made a beeline for the safe, where they grabbed around $150k in jewelry. 

Sean also had some unpublished music in the mini-vault, which was also stolen.

Cops tell said they believe it was an inside job ... they think the thieves knew Sean was in Dubai and had a clear layout of the house.

No suspects yet.