stand out a mile
To be very conspicuous. I grew up in California, so when I moved to Minnesota, I felt like I stood out a mile. Unfortunately the cover will need to be redesigned. The error in the image stands out a mile.
stand (or stick) out a mile
be very obvious or incongruous. informalstand/stick out a ˈmile
(informal) be easy to see or notice; be obvious: He’s not telling the truth — it stands out a mile.It sticks out a mile that they’re having problems.