04/16/2012 at 02:30 PM EDT
It's Marie Osmond
's turn to tell her brother Donny a thing or two about puppy love!
During a weekend trip to Washington, D.C., the singer adopted a rescue puppy named George at Fashion for Paws's runway show to benefit the Washington Humane Society
"I grew up with mutt's...they rock," she Tweeted
Sunday. "I'm already head over heels for this little guy."
Osmond, who wrote that her kids were "getting a new best friend," spied the adorable dog while serving as honorary chairwoman of the fundraiser. George spent the rest of the night (mostly fast asleep) in his new owner's arms.
It sounds like Osmond's puppy love is only going to get bigger as the years go by. "They tell me George will be about 60 to 70 pounds," she Tweeted
. "There goes the couch!!!"