January 12, 2016 09:45 AM

They’ve had their ups and downs – on national television, no less – yet there’s nothing but love between Kim and Kyle Richards.

Kim, 51, celebrated Kyle’s 47th birthday late Monday with a vintage picture of herself as a young girl, crouching sweetly over her sleeping baby sister.


“I’ve loved you from the day they brought you home,” she captioned the throwback Instagram. “Happy Birthday little sister!! I hope this year is best year EVER for YOU!! I love you.”

Kyle recently opened up about her reconciliation with Kim – the two fought last season on The Real Housewives of Beverly Hills when Kim relapsed with her alcohol addiction, and the fallout from her two arrests over the summer is still playing out on the show.

The reality star told Access Hollywood that their relationship is now “a work in progress” but that they’re “very good, and that makes me happy.”

Kim, she added, “seems solid, and she looks beautiful and healthy and happy.”

RHOBH airs Tuesday at 9 p.m. ET on Bravo.

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