02/14/2012 03:26 pm ET

Sienna Miller's Engagement Ring! (PHOTOS)

Check out that bling!

We reported earlier that Sienna Miller was engaged (and maybe more...) to her boyfriend Tom Sturridge, and judging by her new jewelry, it looks like the rumors are true.

Miller flashed her new bling while heading home from a club in London on Friday night, sporting what looks like a white gold or platinum ring on her left hand, alongside a dark manicure.

Though she recently cut ties with Twenty8Twelve, the clothing line she and sister Savannah Miller ran for four years, Sienna isn't going to be slowing down anytime soon; she's reportedly pregnant, expecting her first child in July.

Check out the pics below!