Three-time Grammy winner Gwen Stefani gave her boyfriend Blake Shelton a trim while quarantining at the 1,382-acre 10 Point Ranch in Tishomingo in his native Oklahoma on Monday.The 50-year-old pop diva used clippers to cut the sides of his head, which wound up looking more like a faux-hawk than the Tiger King-style mullet she originally attempted back on March 26.The 43-year-old country crooner then instructed Stefani to carve Tonight Show host Jimmy Fallon's initials into his head while appearing on the 'Home Edition' of his NBC program. 'Haircut day!'Three-time Grammy winner Gwen Stefani (L) gave her boyfriend Blake Shelton (R) a trim while quarantining at the 1,382-acre 10 Point Ranch in Tishomingo in his native Oklahoma on Monday'She.