Say What is your guide into what has been happening in the world of celebrity on social media.

Say What is your guide into what has been happening in the world of celebrity on social media. Blink and you'll miss a tweet. Scroll too fast and that all important selfie will never dazzle your eyes. Don't panic, as we have this weekly guide on what your favourite celebrities have been up to on social media. Here is what has been happening this week -

Miley and Lily rock Bangerz Tour

It looks like Lily Allen is getting along great with Miley Cyrus on The Bangerz Tour. Lily is the support act on the US leg of the worldwide tour, and the pair posed for this picture to mark the occasion. Miley posted the snap on Instagram and said: "tonight with @lilyallen #bangerztour." Wonder if a duet is in order?

Couple selfie?

Ellie Goulding joked about how 'rumoured' boyfriend McBusted star Dougie Poynter hates selfies - but they still managed to take one. The star posted this picture on Instagram of the pair and said: "Doug's I hate selfies face." They both recently attended bandmate Danny Jones' wedding so it looks like this romance is coming along nicely. We think they make a cute couple, don't you?

Gym in your Calvins?

It appears Abbey Clancy prefers to go to the gym in nothing but her Calvins. The star showed off her flawless figure on Instagram, and said: "Gym time." We do hope she changed into more appropriate attire for her workout. But as they say, if you've got it, flaunt it.

Katy Perry offers to babysit...for a small fee

In the world wide web, there is a little gem of a video trending - and it is all thanks to an adorable baby girl and Katy Perry's hit Dark Horse. The video was posted this week and features the tot crying - until she hears Katy Perry's music. Katy joked about the video  in the above tweet - and we have to admit we would pay for Katy Perry to babysit...her music seems to have a way with the wee ones. Watch the adorable clip below -

When Kim met Sam

We just adore Sam Smith and it seems our taste is spot on as Kim Kardashian apparently does too. The US socialite posted a picture of herself with the singer on Instagram after they met while filming Jimmy Kimmel's chat show. She said, "OMG I met Sam Smith" He's on Jimmy Kimmel tonight too. Tune in Xo" OK Kim, play it cool. Although it seem Sam was rather taken by Kimmy too as he said, "So so good to meet the outrageously beautiful @kimkardashian xx". Now there is a compliment if we ever saw one.

Reese rollerskates

Actress Reese Witherspoon went a little old skool on us - by rollerskating. They very retro mum posted this picture on her Instagram and said: "#thishappened this weekend. And it hadn't happened since the 90s..." Now we have a sudden urge to dig out and dust of our rollerskates...although we doubt we will have that perfect beach or weather as a backdrop! Lucky Reese.

Sisters doing it for themselves

Paris and Nicky Hilton posed up for a picture in Amnesia nightclub in Ibiza. Paris - wait for it - is djing at the legendary venue. We have to admit, we are loving Nicky's sunglasses!

Ciara back in the studio?

Pop princess Ciara appears to be back in the studio making music despite just becoming a 'mom' as the Amercican's say. The Goodies star gave birth to son Future Zahir Wilburn back on May. But the singer, who is engaged to rapper Future, has been in the studio with Dr Luke who previously worked on Fantasy Ride with her. Dr Luke has worked with just about everyone in the world of music. Some of the producer's better known hits include Pitbull's Timber, Katy Perry's Roar and Dark Horse, and Miley Cyrus' Wrecking Ball. Sounds like she is in good hands!

Rita is doing a movie but it's a secret

So we know that singer Rita Ora has a role in 50 Shades of Grey movie. She will play Christian Grey's sister Mia in the movie due out next year. But it appears she is involved in another project - although she won't tell us what it is. She posted this picture on Instagram and said, "Just wrapped a secret movie I can't wait for you all too see it!! Pittsburgh your awesome!!"

JWoww baby

Before the Geordie Shore...there was the Jersey Shore which starred JWoww. The reality star recently gave birth to daughter Meilani Alexandra Mathews - and how cute is she? Jwoww - real name Jenni Farley - posted this picture of the cute tot with her fiancé and baby daddy Roger Mathews. She joins former co-star Snooki in the mommy club. Snooki and fiancé Jionni are parents to Lorenzo and they are expecting another baby later this year. Will be we have a Jersey Shore baby spin off...now that would be something!