stick out like a sore thumb
US /stɪk aʊt laɪk ə sɔr θʌm/
UK /stɪk aʊt laɪk ə sɔr θʌm/
1.
to be very noticeable in a way that is different or unusual from the surroundings
:
•
Her bright red dress made her stick out like a sore thumb at the conservative event.
•
The modern building will stick out like a sore thumb in the historic district.