Britney Spears And Her Boyfriend Are Totally Doing That Long-Term Relationship Thing Where They Start Dressing Alike

Britney Spears put a brown wig on boyfriend David Lucado's head!

Britney and David might be turning into one another...

You know how they say people in long-term relationships gradually start to look like each other? Well, umm... Paging cute couple Britney Spears and David Lucado!

I mean, if the "Tik Tik Boom" singer grew some facial stubble, a few more inches in height, and some chest hair, we wouldn't even be able to tell the two apart! (Now, try to imagine Brit with stubble. Actually, um, don't.)

Brit showed off her new-ish brunette 'do (buh-bye, blonde) with her beau before her show in Las Vegas on Instagram, along with the caption: "David had his hair done for my show!"

(SPOILER ALERT: David's really wearing a wig. Here's the proof!)

Anyway, this moment was snapped just before the couple pulled a prank where David went on stage in a twin wig to see if he could fool all the #BritneyArmy into thinking he was her.

OK, that didn't happen. But, don't act like you wouldn't be willing to pay your last cent to see him busting a few "Work Bitch" hair flips in a sparkly leotard. I mean, it wouldn't be the most shocking thing we've ever seen in Vegas. #ElderlyElvisImpersonatorTwerkingInAThong

Photo credit: Britney Spears' Instagram;