Haylie and Hilary Duff

Haylie Duff Reflects on
'Beautiful Memories' from
Hilary's Wedding
A sister's wedding is a big day for anyone – and it's no different for Haylie Duff, who watched proudly as little sister Hilary got married on Saturday.

Reflecting on the nuptials on Monday, Haylie, 25, wrote on Twitter: "what a special weekend filled with love and beautiful memories." (The post later disappeared, but not before being reposted by a number of Haylie's fans.)

Hilary, 22, exchanged vows with Canadian hockey player Mike Comrie, 29, in Santa Barbara, Calif., on Saturday. "Mike held his arm around Hilary for most of the romantic, candlelit ceremony, and they both looked extremely happy," an eyewitness told PEOPLE.

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Not surprisingly, Haylie served as maid of honor at the ceremony, according to OK! magazine.

Former Lizzie McGuire star Hilary Duff matured without tarnishing her perky, mom-friendly Disney veneer – which former rival Lindsay Lohan shed.

The tween TV hit spawned a movie spin-off that launched Duff's big-screen career, and as a pop singer, she released three platinum-selling albums, two of which topped the Billboard charts. But it was a reported feud with Lohan over pop star Aaron Carter that had the tabloids buzzing. Duff eventually moved on, dating Good Charlotte rocker Joel Madden for more than two years before finding love again with hockey player Mike Comrie – with whom she married in August 2010.