Spotted! The Coolest Celeb Happenings This Week – July 13

July 13 2012, Published 8:20 a.m. ET

Charlie Sheen poses with Slash during the guitarist’s Hollywood Walk of Fame Star dedication ceremony at Hard Rock Cafe Hollywood on Tuesday.
Australian Supermodel & designer Nicole Trunfio and Russell Simmons chatted at the Trunfio Jewels trunk show, hosted by the new Blue&Cream East Hampton location on Main Street last Saturday.
NBC’s Smash star Megan Hilty cools off from the heat wave with some Starbucks ice cream in New York City.
Entourage’s Emmanuelle Chriqui walks Lance Bass, who was wearing a dog costume, through L.A.’s Runyon Canyon as part of the Power of 2 to help raise money for Colon Cancer Canada and St. Jude Children’s Research Hospital.
Ashley Tisdale will star in a PSA about PUMA’s Project Pink (launching in August). She will encourage people to nominate and vote for charities by making appearances and via her twitter page.
Dallas' Josh Henderson and The Bachelorette's Chris Harrison reconnecting (he was recently on Access Hollywood Live while Chris was subbing for Billy Bush) over a couple Heinekens at the pre-Espy party at the Playboy Mansion.