Aditya Birla Fashion and Retail (ABFRL) has entered a definitive agreement to acquire 51% stake in designer brand Sabyasachi, the company said in a regulatory filing. The cost of acquisition of the stake would be ₹398 crore, it added. "Over...the last couple of years...I began searching for the right partner in order to ensure...long-term sustainable growth," Founder Sabyasachi Mukherjee said.