<p>The couple announced the news Tuesday on Instagram. Burnham wrote:</p><blockquote>"Alessi is getting a baby BROTHER & a baby SISTER"</blockquote>
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</div></blockquote></div><p>Luyendyk posted photos from the same family photo shoot, and wrote:</p><blockquote>"BOY! & GIRL! How did we get so lucky <a href="https://www.instagram.com/laurenluyendyk/" target="_blank" rel="noopener noreferrer">@laurenluyendyk</a>?!"</blockquote>
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</div></blockquote></div><p>The couple also shared the news on their YouTube channel, documenting the big reveal. Prior to finding out, Burnham said:</p><blockquote>"I think we are either having a boy and a girl or two boys."</blockquote><p>And she was right! The couple opened an envelope to find out they were having a boy and a girl. Burnham continued:</p><blockquote>"How did we know? I think we were just hoping!"<br></blockquote>
TWINS GENDER REVEAL! | LAUREN & ARIE
<span style="display:block;position:relative;padding-top:56.25%;" class="rm-shortcode" data-rm-shortcode-id="ac6dc89623dcf9c5364f221d18ed552f"><iframe lazy-loadable="true" src="https://www.youtube.com/embed/XYdQEAHqGZY?start=513&rel=0" width="100%" height="auto" frameborder="0" scrolling="no" style="position:absolute;top:0;left:0;width:100%;height:100%;"></iframe></span><p>Luydenyk and Burnham are already parents to 19-month-old Alessi.</p><p>Congrats to the happy couple!</p>
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