British star Keira Knightley, 27, and her fiance James Righton, 28, the co-vocalist and keyboardist of the British indie rock band, the Klaxons, were spotted out in New York's SoHo neighborhood this weekend, holding hands, grinning widely, strolling, shopping and looking very much in love.

Though the couple have been together for 15 months, they only recently confirmed their engagement, and have usually kept their romance somewhat under wraps. For example, Knightley, who is now filming the romantic flick, Can a Song Save Your Life?, costarring Mark Ruffalo, Hailee Steinfeld, Catherine Keener, Adam Levine and Mos Def, has not yet appeared with Righton on the red carpet, though the lovebirds have recently started to feel more comfortable casually stepping out together.

Knightley dated her Pride & Prejudice costar, Rupert Friend, for five years before their January 2011 split. Before that, she had a shorter romance with Irish star Jamie Dornan.

Can a Song Save Your Life? is slated for a 2013 release. Knightley will first appear in the titular role of the Tolstoy-based Anna Karenina, also starring Aaron Johnson, Kelly Macdonald, Jude Law, Matthew Macfadyen, Emily Watson and Holliday Grainger, which will hit theaters on November 16, 2012.

For more on Keira Knightley:

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