Celebrity Twitter and Instagram Pictures Week Oct. 26, 2012

It's been a busy and exciting week for lots of celebrities, and thanks to social media we know exactly what they've been up to. Birthday boy Guy Sebastian (he turns 31 today) welcomed Stephanie Rice to a live show of The X Factor earlier this week, while Delta Goodrem's been busy promoting her new album Child of the Universe, which is out today. Jennifer Hawkins treasured time with her pup, Milly, and Jesinta Campbell shared behind-the-scenes fun for a recent bikini-filled magazine shoot. Click through to see the week's fun pics, and don't forget to follow us on Facebook, Twitter and Instagram (@PopSugar_Australia)!