@mirandalambert / Instagram 1 / 12
@mirandalambert / Instagram 1 / 12

Uh, where's he been!? When Miranda Lambert isn't spending time with her handsome husband Blake Shelton, she's hanging out with another cutie -- her little brother! The country singer posted an adorable picture with her look-alike brother Luke Lambert via Instagram on Thursday.

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"Bro & sis margarita time!" Lambert, 30, wrote. In the snapshot, the siblings are smiling ear-to-ear while holding up their drinks. The "Automatic" singer is wearing what appears to be a large polka dot bandana as a headband and donning dark eye makeup.

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Lambert hasn't talked about her brother much in the press, but has invited him as her plus one to some red carpet events. In April 2011, the country powerhouse arrived at the 46th Annual Academy of Country Music Awards in Las Vegas with her brother on her arm.

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A margarita was perhaps Lambert's drink of choice while celebrating her third anniversary with Shelton last month. As Us Weekly exclusively revealed, the "Voice" coach surprised his wife with a little R&R in-between her hectic schedule. (She's been on the road the last couple of months promoting her new album Platinum.)

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"Yesterday I had my last day on set before coming here, and I drove down to Lake Texoma. We've got a boat down there and marina," he told Us at the Pepsi press conference in Nashville on June 3. "I'm not a mechanic, but I managed to get this thing running, because I know when she gets back, she's gonna want to do something like that, just go and float around and drink and get pulled on the tube or something. So I thought 'Well, I'll get me some points in the end and get the old boat running.' So I did."


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