Jessie J in Daring Camilla and Marc Maxi Dress With Open Back

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Jessie J, whose real name is Jessica Ellen Cornish, attended the Capital Rocks 2013 event at Camden’s Roundhouse on Thursday in an extremely daring halter gown by Camilla and Marc, which features a deep plunge and an open back. The English singer and songwriter styled the dress with gold Dinny Hall jewels.

Jessie J attended in an extremely daring halter gown by Camilla and Marc

Jessie J at "Capital FM and Help a Capital Child present their fundraiser Capital Rocks" at The Roundhouse in London on November 28, 2013Jessie J at “Capital FM and Help a Capital Child present their fundraiser Capital Rocks” at The Roundhouse in London on November 28, 2013

Fashion critics were split on her outfit. Some called the entire ensemble slightly boring, while others thought the cleavage-skimming dress was rather tacky. Then again, Jessie J also received plenty of compliments for her daring number. How do you find it?

You can browse Camilla and Marc dresses at Shopbop, but the maxi dress that Jessie J wore is unfortunately not available online. Here’s a tempting alternative from Rory Beca:

Rory Beca Lily Halter Gown Rory Beca Lily Halter Gown, $273

Credit: Daniel Deme / WENN