Over at Get Ready For Summer, there is a full on GIANT giveaway going on. And I mean giant. Link here:
http://getreadyforsummer2010.blogspot.com/2010/04/giant-giveaway-chanel-particuliere-opi.html
She's giving away rares like Chanel Particuliere (sold out everywhere!) and OPI polishes! Full list here (from her blog):

1. CHANEL PARTICULIERE 505 nail polish from Spring 2010 collection
2. THE BODY SHOP Neroli Jasmin shower gel & body lotion (both 50ml)
3. MAYBELLINE Dream Sunglow Bronzing Booster
4. CHINA GLAZE ENTOURAGE nailpolish
5. CIATE : One Coat a Day (base polish), Hang Over Cure (treatment for cuticles), Super Sexy Dry (drying drops)
6. CALVIN KLEIN Ultimate edge Gel Eyeliner in shade 301 Cocoa Sheen (with mini brush)
7. H&M BRACELET (pink coral color with gold, perfect for spring/summer)
8. CIATE Pink Nail File
9. JILL SANDER SUN EDT 100ml (without alcohol, perfect for summer)
10. NYX LIPSTICKS in 3 colours: Electra, Indian Pink, Circle
11. NAIL ART FIMO fruits (3x10)
12. ELDORA FALSE LASHES B127
13. MORGAN STREET Lip Balm Chocolate Cake
14. 5 SHE STYLEZONE Nailpolishes
15. OPI nailpolish LA- PAZ-ITIVELY HOT normal version + MATTE version
16. THE BODY SHOP RASPBERRY Body Butter 200ml
17.  FRUCTIS Elastic Power Fix Hairspray

Check it all out. Hurry though - it's ending tommorow, Thursday the 15th!
EDIT: Silly me. That's the fifteenth of MAY, not April :P You've got another whole month from this date!

Over at Nail Babble, there's a giveaway!
http://nailbabble.blogspot.com/2010/04/giveaway-details.html

She has second and third prizes as well!

For all and any that are interested, there's a nail art contest going on at Beautopia! The theme is artist's choice!
http://beautopia.onsugar.com/Beautopia-Nail-Art-Contest-Starts-Now-7871905
There are some seriously lush prizes to be won - just look at what first place get!

Also, over at Susie's Home and Hobbies (she was one of my first comments!) she's doing a giveaway!
There's ELF and China Glaze and Sally Hansen and all sorts :)
Get a load of that! Plus, she's added more:
So please follow Susie's blog and enter her giveaway because she is actually really nice and I won't forget that she took time out of her day to make the first comments on a new blog :)
http://susies1955.blogspot.com/2010/03/hey-enter-my-little-giveaway.html