Heather Locklear: What (Almost) 50 Looks Like

08/05/2011 at 01:10 PM EDT

Hitting the half-century mark seems to be no big deal for Heather Locklear – judging by her little black dress.


The eternally sun-kissed stunner, who turns 50 in September, stepped out in stilettos for Samuel L. Jackson's charity dinner in London on Thursday night, rocking the curve-hugging ensemble.

The Melrose Place alum attended the event with her longtime boyfriend, actor Jack Wagner, 51, who supports a healthy lifestyle for them both.

"He has been a great influence on Heather," a friend of the actress told PEOPLE in 2008. "He's really committed to a healthy life."
– Alison Schwartz