By Bobbie Whiteman For Dailymail.com
Published: 18:56 GMT, 19 February 2019 | Updated: 20:15 GMT, 19 February 2019
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It certainly looked like a fun girls night out.
Hilary Duff treated her sister Haylie to a surprise birthday diner at Yamoto Japanese Grill restaurant in Studio City, on Monday evening.
Hilary, 31, and Haylie, who turned 33 on Tuesday, were joined by mom Susan, and gal pals including actress Ashley Tisdale, 33.
Happy 33rd birthday: Hilary Duff, left, threw a surprise bash for her sister Haylie, right, at Yamoto Japanese Grill in Studio City, Los Angeles, on Monday evening
A lone male friend also came along and seemed to be delighted to be part of the party.
Haylie shared all the evening's fun on her Instagram stories.
First of all, the lookalike sisters, who are very close, enjoyed shots with their pals as someone asked, 'What is this?' The brave guy was the first to down his.
And the whole party laughed as the chef
