Jessica Simpson  was determined to have a good time on Friday. "Let's party!!!! Wahoooo," she captioned an Instagram picture with a pal. With the countdown to her wedding well under way , the blonde bombshell looked ravishing in a little black dress. Elsewhere, Jessica Alba  explored Turkey in style, Chrissy Teigen got horizontal on a hike, and Rachel Zoe  proved that, yes, she knows her way around the kitchen. Keep reading to see all that and more, and come back later as stars share more snaps!
Source: Instagram user jessicasimpson 
Ellie Goulding was pretty in pink during her pub stop on Saturday.
Source: Instagram user elliegoulding 
Jamie Lynn Spears  and husband Jamie Watson celebrated her daughter Maddie's sixth birthday  with a giant cake on Thursday. "Our little family...I love them both soooooo much!!!!" she wrote.
Source: Instagram user jamielynnspears 
Chrissy Teigen took a break during a hiking expedition with pals on Saturday.
Source: Instagram user chrissyteigen 
"Another day at the office with @nlyonne #oitnb," Uzo Aduba captioned this picture with her Orange Is the New Black costar Natasha Lyonne.
Source: Instagram user uzoaduba 
"That view tho #Bosphorus #Turkey #KonyaliTopkapi," Jessica Alba  wrote on Saturday morning.
Source: Instagram user jessicaalba 
Ed Sheeran said he "stole'd a hat" on Saturday.
Source: Instagram user teddysphotos 
On Friday night, Rachel Zoe  did some "baking with my boys" and asked her Instagram followers, "If it's organic it's healthy right?"
Source: Instagram user rachelzoe 
On Saturday, Kelly Osbourne said she had "so much fun dancing the night away with #Alanis@morissette at the after party for @24hourplays! This dance is called #TheBeard."
Source: Instagram user kellyosbourne 
Jessica Simpson 's svelte figure was on display in a photo she took with friend Stephanie Terblanche on Friday.
Source: Instagram user jessicasimpson