much sought after
In demand; very popular with or desired by a lot of people. To the surprise of some, the product has been greatly sought after since it was first released. Retailers have struggled to maintain stock of the sought after toy. Now that the property market has begun to boom, construction workers are much sought after once again.
*much sought after
Cliché wanted or desired very much. (*Typically: be ~; become ~.) This kind of crystal is much sought after. It's very rare. Sally is a great singer. She's much sought after.